I went at 8 weeks pregnant with my first and my main issue was when I got hungry, I got hangry and needed to eat right away. But then I'd get heartburn by the time the meal was over, so then I wouldn't fully enjoy the meals as much as on other trips. We announced the pregnancy to my parents, sister, and brother-in-law after we checked into AoA because I knew my sister would think something was up when I skipped out on the coasters. I also went at 21 wks with my 2nd, and my main issue was just getting tired easily. But it was summer, and I was chasing around a 2.5 year old by then. Honestly, a lot of the rides that I had to skip when pregnant are rides I still miss out on because the kids aren't big enough to ride yet. I was lucky to not have bad morning sickness, so that could make a difference.