They might enjoy Rainforest Cafe, which I don't believe is participating in
DDP. The is just okay and a bit over-priced but the theming is pretty impressive.
We like Bahama Breeze on Vineland near the I-4 exit to Downtown Disney - just in the opposite direction. Food is quite good and the atmosphere is great.
The chains in the area are pretty predictable, which could be good as at least you'll know what to expect. Though service can vary from location to location even within the same chain.
Google Orlando Restaurants and you'll get a bunch of restaurant lists and reviews.
Dick Taylor