I'm 27 weeks pregnant and spent the day Saturday at the parks. It wasn't too bad sitting on benches in the shade and there's plenty of AC opportunities between shops, quick service restaurants and attractions. I did a combo of skipping certain attractions all together and doing some people watching & then I also waited in some lines with the rest of my party and then took the last minute out option. The best thing was taking an afternoon swim break! Just make sure she drinks plenty of water, take some snacks and maybe a book (kindle etc) to help pass some time and she should be good.