Book your parks now. As long as you have tickets you can book your park reservations in advance and if you’re going over a weekend, they can fill up certain parks, so book them early. There is park hopping, but only after 2pm. So you have to book a park for the day (say MK) and you have to enter that park. Then after 2pm you can begin hopping to other parks based on availability and capacity restrictions. You don’t have to make another park reservation for the hopped park though.
Usually once you enter the gate of the pool area you don’t need your mask on, but some people have been asked to put them on when getting up to get towels or go to the bathroom. But when you’re in your chair you don’t need it on.
You’re going to want to check out the main Disney site as they have a ton of info you’re going to need.
https://disneyworld.disney.go.com/experience-updates/
thank you!! Feels kind of overwhelming to think about! I had it all figured out pre-covid in terms of one when to book what etc, but now that’s all changed! Looks like I can’t book dining yet and I’m guessing no fastpass. I’ll read through what you linked for me. Thanks again!