I love Restaurant.com and make sure to buy a bunch before every trip to Orlando. I always have a car so I try places farther away too, but have gone to quite a few right near DTD. Here is a list I found when I did a search for 32830 which is DTD zip code.
Kooks Sports Bar (inside Buena Vista Palace) haven't tried but going to this trip
Avu-Avu (also in Buena Vista Palace)
Giraffe Cafe (inside Royal Plaza) I have this one for this trip too
I have eaten at BB Kings and loved it. Gonna go again this trip
I also have eaten at House of Blues and loved that
I used to get Giordanos but they changed their menu and don't have many pasta dishes anymore. I can't eat pizza so it is not good for me anymore.
When you see a restaurant you might like click on the menu and see if there is something that interests you before buying. Good luck.