My biggest contribution here is to remind you to have a plan for when you get home. Have some tasty stuff in the freezer that you can eat for that first day back before you're able to go shopping. From experience, have a variety because tastebuds get a little funny when you've been dining out a lot, and what we normally eat might not feel "fun" when we get home.
And don't stress over a temporary increase on the scale. It takes longer than a week of going seriously overboard with calories to even gain a pound of fat, so any increase is just the bulk of food (anyone else have their innards go on the fritz after about a week of dining out?) and water weight DH once "gained" 9 lbs in a weekend in Vancouver lol. Lost it by the next week's weighin.
So don't freak out if that happens. Gains happen, and the Disney related ones are almost always temporary. Just keep going with your plan to keep any gain temporary.