Renewing wedding vows Eiffel Tower.....

Why not just stand in front of the Eiffel Tower with some friends and make your own renewal ceremony?
Bring a picnic, champagne...
I don't think there's any need for anyone to officiate - or you could ask one of your friends to do it.
Since it's March, and the weather might not cooperate, it would be wise to have a Plan B, in case it rains.

There is no gazebo or other structure handy near the Eiffel Tower, that I know of, but there are lots of trees in the back garden.

Another idea might be to take her to the top (maybe with a photographer planted nearby) and make a special romantic gesture; present her with flowers, or a single rose and tell her how much you love her, buy her a piece of jewelry in Paris (on the sly) and present it to her at the top, ask her to marry you all over again, read her a poem- whatever is in your heart (and budget and time frame). Any gesture to make her feel special will be romantic and forever remembered. (But a good picture of the gesture in progress is better yet!) Good luck!
Lisa

Honestly - the Eiffel Tower can be ABSOLUTELY packed with throngs of tourists. It can get really tight up there with people shoulder to shoulder and some tourists actually trying to push through...it's a nice place to visit, but I sure wouldn't plan on having anything "romantic" going on.

I agree that you will have a lot more room if you do not go up into the Eiffel Tower itself. At best, it's crazy - packed...
Perhaps you could take a walk around the backside of the tower where the trees are, and find a suitable spot.

Or, if you have the funds to spend, go eat dinner at Le Jules Verne.

Thanks All for the feedback and ideas. After thinking more about it, I think you are all correct that it'll be very busy trying to do something while on the 2nd floor or summit of the tower, so it may not be the most romantic or easily accomplished.

Going for a picnic on the lawns near the tower, so we have the tower as a backdrop is a better scenario and great idea.

Grabbing a little wine, some great cheese & bread and some flowers and just enjoying the moment of being in Paris, will be special enough. The initial thought was just doing something romantic on the most iconic and recognizable structure in the world, but I certainly don't want to get too lost in the business and trying to overdue it and miss just enjoying the moment. And I will probably still try to do this on the down low, so she's not aware of it and it'd be a surprise for her. In planning our clothes packing for the trip, we're trying to go light and are just carrying backpacks, so we're more freely mobile. Of course, trying to determine what to bring is always a fun scenario and I did ask her to just bring maybe one nice dress to go out with, which at first didn't go over so well, but then I told her it's because I planned on going dress shopping with her and buying her a dress while we're in Paris. That made her face light up with a big smile! :-) Maybe as she's dress shopping, we(I) can grab the wine, cheese, etc and go the picnic? I think that could work out well. Thanks again all for the feedback.

Hi Scott, Paris is sort of dripping with romance so I don't think it will be too hard to find a place to make a special moment. How about one of the "love lock" bridges? I like the Solfino Bridge near the D'Orsay Museum. It's a pedestrian bridge so you don't need to worry about dodging traffic. It would be a nice place to take a quiet moment to express your feelings, give your wife a flower, and maybe an anniversary ring. Please report back and let us know what you decide to do! Love Paris :)

Or if you like a bridge, find one with a view of the Eiffel Tower and be there at night on the hour when it twinkles. The Seine at night with lights on the water is very romantic.

There are no locks permitted anymore on Paris bridges.

You can go to nearby rue Cler to purchase picnic food and wine, even plastic glasses, etc. Make sure to avoid going during lunchtime, when many shops are closed. They will re-open around 4:30 or 5PM.

Do remember the Plan B - and hope for good weather.

You could hire a photographer for professional photos around the Eiffel Tower (or anywhere around Paris). My friend used this company when he proposed to his girlfriend. https://www.kissinparis.com/

There is a spot on the Bir Hakeim bridge with a beautiful view of the Eiffel Tower that would be uncrowded and nice spot. You can see a snapshot of the spot near the end of this series of snapshots:
https://janettravels.wordpress.com/2011/11/01/stroll-on-a-sunny-oct-31-parc-citroen-to-the-eiffel-tower/
There are loads of romantic spots in Paris; or take her for an anniversary lunch at La Tour d'Argent
https://janettravels.wordpress.com/2016/03/01/anniversary-lunch-at-la-tour-dargent/Pricey but a fabulous view and a fabulous lunch and if you book 2 or 3 months out maybe you'll get the great table we did.

The OP stated that he was going in 8 days or so...

I don't see why you cannot stick to your original plan. Buy something small and appropriate. Go to the top of the Eiffel Tower. Listen to chatter of the people in the mob until you find someone talking English (or French if you can speak French). Ask him/her if they would take a photo/video for you. Find a good "Paris" background. Pop the renewal of love/vows question, offer the gift and have your free photographer take lots of photos or preferably a video. Your romantic gesture is almost certain to cause the "mob" to burst out with applause - great if captured in a video. What woman wouldn't love it - maybe even burst into tears. Even if the video is less than professional quality it will still be an awesome memory. Go for it.

http://www.en.everphotoshoot.com

Take a look at this, great reviews on TA.

You could say your own vows while photos being taken. No up front cost. We are going to try them in Oct

Wow...you are all great with the ideas and suggestions. Thank you. As others pointed out, I think a lot will depend on the weather and etc.

I like the picnic idea and and getting pictures on one of the bridges and think we'll just see how the first day or so unfolds and our schedule and see what could be a best option. In our procrastination of planning, we failed to get pre-booked tickets to the Eiffel Tower, so now we're going to have to wait in line, or walk the stairs to 2nd level and see what happens with that situation. If that works out and we get up to the summit and we both feel good about it, then maybe we'll offer to buy someone a glass of champagne, if they'd be willing to take our pics/video? ;-)
We've talked about it a few times and of course being in Paris, it'd be awesome to do the vow renewal, but we also just want to really enjoy being there and don't want to put any pressure on ourselves to try and make it happen. Now I'm thinking, it'd be great for it to be spontaneous and go with whatever happens, rather then for us(me) trying to schedule it, since as you all know, Paris is busy.

No offense, but the Eiffel Tower is about the least romantic place in Paris. When I was there last year, they threw up a lot of crappy walls around the base, and of course there was the usual massive crowds and lots of street vendors selling cheap trinkets (both legally and illegally - including on the lawns around the Tower - so do you really want to get interrupted by some guy trying to get you to buy a light-up miniature Eiffel Tower?). Tickets do sell out in advance, but if you really feel you must do this there, you could probably get your hands on some express, skip-the-line tickets for a group tour (many which leave you up there afterwards for as long as you want so you can do your own thing) so you can get up to the 2nd or 3rd level.

There are other spots in Paris where you could do this and see the Eiffel from a distance as you renew vows or give her a gift. I think climbing to the top of the Arc de Triomphe in the evening would be better - it's never particularly crowded late in the evening and if you time it right, you can be up there and watch the hourly light display of the Eiffel. There's also a possibility you might be able to contact a restaurant like Les Ombres that has a fantastic view of the Eiffel and see if you can arrange for the staff to help you with your special day.

Printemps and Galeries de Lafayette department stores both have really great rooftop decks with 360 degree views of Paris. There's also a good view of Paris (Notre Dame especially) from the rooftop terrace at Institut du Monde Arabe.

If you get tickets to Versailles, I would recommend telling her you want to start with exploring the gardens and the Petit Trianon first and then backtrack to the main palace. In the gardens there is this structure called the Temple de l'Amour. If you hit that as soon as Versailles opens, you will have that area essentially to yourselves. Every tourist that lines up to get into Versailles in the morning is there pretty much to get into the main palace. They don't make their way over to that part of Versailles until after they have seen the palace.

A less crowded version of Versailles with some really impressive grounds is Vaux le Vicomte which is not far to get to from Paris and accessible by public transit.

Les Ombres is a good restaurant with an amazing view of the Eiffel Tower - situated in the garden of the Museum Quai Branly, easy to find.

You have to reserve, but it's easy if you use TheFork:
https://www.thefork.com/restaurant/les-ombres/8663