Oh wow, Orlando is amazing, we have been twice and we absolutely love it.
are you planning to drive over there? What parks are you looking to do?
we usually do 7/8 nights at a Disney hotel and then we move to an international drive hotel. We don’t drive while over there and Disney is quite far from international drive, so we opt to do a split stay for ease.
I would fully recommend universal, including their water park, volcano bay. Plus all the Disney parks as they are magical!
Busch gardens is amazing if you like thrills and animals.
I’d also say, don’t try to cram everything into one trip. We did do both universal main parks, all Disney main parks, one Disney water park, Busch gardens and seaworld in one trip, but it was a lot and you will definitely go back.