Well.... ummm, Orlando and Disney are not the best the US has to offer. Sorry. I understand why Europeans think the US is void of culture because they all seem to flock to what is basically a giant amusement park. Hooters, Dunkin Doughnuts and Denny's are also among the worst of our offerings, food wise both in terms of being primal and actually tasting good. Downtown Orlando should have some great restaurants and there is a place near Disney that has good restaurants called Celebration.
I guess I'd visit Disney, if you have kids with you or if you enjoy that style of manufactured entertainment. I've never understood the appeal, but it is quite a spectacle. Epcot Center has a big area that is like a giant fake Europe.
However, if you want to enjoy the best of Florida, you need to rent a car and leave Orlando. Drive to Cocoa Beach. Ask around for the best places to eat (yummy seafood). Charter a fishing boat near the beach. Stop at a Citrus stand. Cocoa Beach is a day trip from Orlando. It's near Cape Canaveral. If you can get to the Gulf Coast, I love Sanibel Island- go look for shells and check out the flamingos and again, charter a fishing boat!
Tipping - I tip 20% to waitresses. If you eat at someplace like Waffle House and have say, a $5 tab, I'll leave a $5 for a tip. Sometimes I'll leave $10 or $15 if it is work travel and I eat there a few days and the staff is nice. The staff at chain restaurants are most likely not making a living wage even with tips. You should leave a couple of bucks for maids at the hotel.