Sainte Chapelle

I can't answer the first part of your queries but as to whether women are expected to cover their shoulders in churches as in Italy, here goes. Places of worship built before 1905 are property of the French Republic and are at the disposal of the religion in question but are not really controlled by it and, there are no Italian style rules for entering a church. That being said, most people I know dress with some modicum of thought to the fact that they are entering a church but I have seen some outfits at the big tourist site churches in Paris that are head scratchers.

s42mahoney,
Ste. Chapelle is no longer an operating Catholic church...no masses, etc. However, it was a church and is a beautiful place that formerly saw religious services. Because of its history, I would dress with, as JHK says, a modicum of thought. You may think of it as more of a museum, but one that has witnessed untold moments of prayer and sanctity.
As far as reserving a slot with a museum pass, I cannot answer. Last May we reserved a slot on the same day, just about 2-3 hours before. Slots were for the hour and the half-hour.

In September of 2023, I was unable to get tickets one day ahead of time for Sainte Chapelle. As with many attractions in Europe, I would recommend reserving as soon as it is possible to do so.

This is exactly the problem. I want to reserve, but I'm starting to think its like finding a needle in a haystack. There is no availability at all...not even for May or June.

I just looked at the site. It looks like the tickets are not yet available for July. I would check at the end of this month because June dates are currently open and all June dates I looked at have slots available. It looks like they are opening up ticket sales two months in advance. By the way, are you looking at the official site for your tickets?

Yes there are tickets, I'm in there right now. I've got a 12 June at 930 free ticket for PMP holders in my cart.
I can also select multiple in May.

Are you on the official site? https://tickets.monuments-nationaux.fr/fr-FR/produits-seances

We were at Saint Chapelle last week. We had timed tickets that I purchased quite a while back. It was still chaotic and a little confusing. But we were admitted to go through security about 20 min after our scheduled time. Then security then we walked though.

Can’t imagine July in non ticketed line.

All the hundreds of people inside/outside were dressed the same…jeans and walking shoes.

July tickets haven’t gone on sale yet. Keep checking. I think the tickets go on sale a couple of months out, so check May 1. (Though check everyday prior just in case.) I booked so many things I can’t remember exactly how far out I purchased mine but the current calendar shows availability through June 30. So the next ticket availability will be your week.

On TripAdvisor someone posted: "Go next door to the Conciergerie and buy a “combo ticket” for both attractions. Then you can go back to the Chapelle and enter straight away (or with whatever time slot is being allowed to go in). It’s a massive loop hole and worked like a charm for me. The Conciergerie is also a nice attraction and worth seeing as well so be sure to see both - especially if you paid for it!"

Has anyone done this recently and can verify?

There seems to be a lot of tickets left for June. I just bought June 2nd, 5 people.

Thank you Rick Steves community! I was on the right website, but I can see that June is now available, so I will have to make sure I am checking every day around mid-May. June just became available and I am sure will sell out soon. I have not checked out PMP availability yet, but I am just relieved to know that we have a fighting chance.