Food is not as cheap out there as it used to be. Sure, you get a good portion, but forget paying a few dollars for a burger and coke any more.
Restaurants (and I don't mean posh ones, just regular non-theme park ones) were coming out as between $80-$100 dollars for two, usual burger + drink + fries was around $12 in a park, and beer is about $8 in a park too. As far good restaurants go, you have to try The Melting Pot: It's a fondue place, and it's outstanding.
If it helps your cause, you will not do the Universal & Disney parks in 4-5 days. You can do bits of them, but definitely not all. What time of year are you going? If it were me, and assuming no kids are going, I'd prioritise:
Islands of Adventure
Universal Studios
Hollywood Studios
Busch Gardens (yes, it's worth the trek across)
NASA (as above, but the other direction!)
Magic Kingdom and Animal Kingdom are okay, but nowt special unless you have the little ones. Epcot is good too though.
We saw the Magic a couple of years back, it was a great evening out and I'd do it again. I'd love to go see the Dolphins too , but we always end up going in the off season now
Ah just seen you're going in June. Nice