You guys are all so amazing, this is great advice! I'll be bookmarking this thread so I can come back to it.
I haven't been to Epcot or Hollywood Studios in over 25 years, DH has never been to HS, and DS has never been to either, so parts of this trip do feel like a big deal to us! I am a planner by nature, and it is hard for me to be spontaneous without getting stressed, so I will need to work on that. My DH of course is the other way around. Even
talking about planning stresses him out, and he'd rather just show up and do whatever.

So usually I plan all our trips and then he just follows along.
So...FP's. What happens if you book them all and then end up switching your plans one day to a different park? Isn't is hard to get those rides booked again on another day now that you are doing it last minute?