I believe you can charge purchases and food to your room key for any restaurant that takes credit cards. As for food, most of the food at IOA is pretty good. I tend to avoid the food at USF. My favorites are:
IOA: Confscio's Grill, Mythos (the bannana gooey cake rocks!), Fire Eater's Grill, Thunder Falls Terrace, Burger Digs, Cafe 4
Citywalk: Margritaville, Emeril's (good, but pricey!), Hard Rock Cafe
USF: I hear Lombard's Landing is good. Avoid Mel's Diner. The food is pretty gross!
Also, at the Beverly Hills Boulegerie at USF and Croissant Moon Bakery at IOA, there are these huge cookies that are delicious. They cost $1.99 and you can have one for a light breakfast.
Barry Hom
The moderator formerly known as Barry aka usagi
Moderator, Universal and Sea World Boards
"If you were me, you'd be good looking."