Oh congrats to both of you!!!!!
Well I did Disney in the dead of September(just cause I was preggo did'nt mean I was changing our normal time of year going to Disney! LOL) I was 7 months along as well , got the ok from my Dr, my advice plenty of water....eat, eat, eat , why the hell not your preggo deal with it later....Plenty of bathroom breaks, I had a 3 year old who was potty trained so at that point they need to check out every bathroom which was ok because I needed it...and the cool air-condition of the bathroom did me good TIP ..one sandwiched next to crystal palace and casey's, right in the middle is the coldest!!!.
Take plenty of rests to put up those feet because at the end of the day , you'll end up with cankles....Can't really tell where your ankles and calf meet , yeah I had those, and I'm a pretty fit, active person so to have those...yeah interesting....But your preggo what can you do..
There was not too much I did'nt do other than the obvious, You know Splash Mountain , Space and such....I have seen and heard other woman doing them , me personally I just did'nt want to risk it...Plenty of time to do that next time....
But overalll pace yourself, you know your body, when your tired go back to the resort for swim or a nap....You need those even when your not preggo.
Last but not least, enjoy yourself, it goes by way to fast!!!