I've done the same thing before, when I don't know what the bathroom situation is. Most recently when we took our daughter to an animal zoo. I called ahead to make sure they had restrooms to begin with, and she said they had plenty. Made the anxiety go away as soon as I got there and saw the restrooms. If I can't find out about
the restrooms, and it's something I must attend, I do what you probably shouldn't do...not eat the day before. Yes I know that's not healthy and shouldn't be done, but it works. Can't worry about
the restroom much if my system is mostly empty.