Interesting question.
Sorry Rick, but we don't use any sort of travel agency any more.
Don't buy traveler's checks, and don't use second party airfare brokers like Expededia. We book with the airlines directly.
We've also learned to dismiss, very cheap airfares, if there are extraordinary long over stays, and many connections. This use to be fun, but we are getting too old to sleep in an airport
We use paper maps.
We have stepped down the clothing we bring, to be presentable, but not high formal. We are not foodies that need to dress up for a restaurant evening's night out. And, really have never had the inclination anymore to find that perfect expensive regional food, from a highly rated, snooty restaurant. Three blocks back, off the main tourist corridor is the same, less expensive and better regional fare.
These are a bit tricky, because there is a local group of regulars, and they have absolute authority, to move you, if you have set up at the wrong table at the wrong time. You graciously apologize, and quickly move to the lesser tables. And then, for some reason, all the wine is covered by the house. :)
We are very bad at technology and using smart phones. So paper tickets are something we have never given up. And the same can be said for cash. We don't use Paypal for small vendors, cash always works, for large and small payments. And large payments in cash, hotel rooms, etc, almost always has a discount of some sort. We take as many credit and debit cards as we can. But only try to use the one debit card set up for travel, which is tried to our travel savings account. One place makes it easier to figure out if something went wrong.
Not knowing how to use smart phones, we bring a cheap laptop, which we have done since 2004, and it works out using a laptop, cause the hotel always had a printer.
We don't take our good cameras. Most sites don't let you set up anyway for long exposure. And digital cameras made such huge jumps in what they can do from 2004 to today, that any old, $20 dollar used camera works for us. 4 GB SD cards are near free. So we take lots of those, and way too many pictures. I've learned that it makes no sense to turn a digital camera sideways if you enough of the view. There is no good way to take a picture behind a glass case in low light.
Leaned that all the burned DVDs of our vacations, sent out to all our friends, with comment, isn't all that interesting to them. The web has far better people doing this anyway.
My wife has had to go through three sets of luggage, because they were not made well, and the wheels ran out. I have a set, I have been using since 2004, because they have been modified to use hardware store caster wheels. I'm not giving up those even if there is some duct tape involved. Its very important to make your luggage identifiable. We tie very colorful, short ribbons to the handles.
If lost, don't go to the local TI. Go directly to the train station. :)