I guess it depends how early you're getting into town and how much does the card cost?
As you've already noticed alot of the things are nowhere near Orlando so once you knock those out of the picture would it really be worth it?
Out of the list I would say that Gatorland, yes, it's touristy, is actually a lot of fun.
If you're looking for less touristy.....
The Morse Museum (a fabulous collection of Tiffany glass!) and lunch somewhere along Park Ave in Winter Park is a lovely, low key way to spend an afternoon and could easily be combined with the scenic boat tour of the Winter Park chain of lakes.
If you enjoy local history you could spend an afternoon at the Orange County History Museum, have a nice lunch downtown and then take a stroll around Lake Eola.
I'd be happy to answer any questions you may have about Orlando.