First of all, whether or not you know it, you will naturally make better choices while at Disney simply from habit of being on WW. Also you will find some of those yummy treats you used to scarf down will over fill you and make you feel uncomfortable and you will not want to eat as much as you will get full sooner.
I just got back from my first post-trip weigh-in. I lost .4 from my last normal Saturday morning weigh-in. And I was stuffed for quite a lot of our trip.
We had WDW, Universal, and a 3 night
Disney cruise during our trip. I generally focused on one really solid meal per day, but didn't starve the rest of the day. I just didn't eat a ton. Once I go through my trip report stuff and receipts I could probably work out about what I had, but that would be boring, LOL. We drank lots of water.
Speaking of water, not everyone finds Orlando water to be nasty! That said, we do buy cases of Zephyr Hills for normal drinking.
I tried to eat fruit when possible, and being vegetarian I tried to focus on vegetable-containing meals. DH and I shared a Bounty Platter one morning and it was perfectly enough (they did give us extra eggs in place of the meat).
On our last night we ate at Territory Lounge at WL, and I will tell you, ONE order of fondue is probably enough for two adults, especially if those adults are both on WW! We ordered two, not realizing that they would be generous with portions, and we had SO many leftovers that couldn't be eaten the next morning.
I ate what I wanted; but what I wanted was far less than it was a year ago.
I do agree to stay away from buffets when early on in the journey. Then again, if it's what you truly enjoy and you are OK with a possible gain, go for it. Just know that you might not get as much "value" from the buffet than you used to get. We went to Tusker House, and that was one of the very few meals where I ate enough to be in pain. It's just soooooo good. I tried to get tiny portions, because there's so much there that I love, but it was just all too good. We also went to Sweet Tomatoes, where I just let my stomach be my guide.
Honestly, the hardest part of the trip was coming home! Our fridge was very empty, and the jet lag hit me HARD, so I couldn't get out for shopping for 2 full days. Our flight was full of eating (United's Tapas box meal is delicious, but full of fat) and then our time home has involved pizza etc. Getting back on track has been very much wanted, but when you can't get to the store because you're so exhausted, it's hard.

Today is a new day and a new tracking week for us, so it's fine.
Anyway, that's my recent experience! DH did well also, but had a small gain. He is *extremely* sensitive to water-weight, and was taking ibuprofen the whole trip which causes water-weight in him above normal. Since he was injured going in to the trip, he wasn't as active as I was. So all in all it makes sense that he had a gain and I had a teensy loss.
And for the record, the pastry near Canada's showcase with something like cherry and cream cheese was huge and beautiful, but possible the most tasteLESS pastry I have ever had! Same goes for the chocolate chip cookie DS got from there. Not sure how they managed to make such gross "treats", but we will be avoiding that kiosk in the future. It was not points-worthy.
