Cici's Pizza (with locatons on I-Drive, Lake Buena Vista, and Highway 192)  is extremely cheap for the $4.49 eat all you want pizza, pasta and salad buffet.

Or go to Festival Bay Mall (north I-Drive) and try Fuddruckers for burgers.

Ponderosa (I-Drive, Lake Buena Vista, and Highway 192) has an excellent steak with buffet starting from $9.99 and a 100 item breakfast buffet at $3.99.

Golden Corral (off  IDrive opposite the large McD's, and on Highway 192 and in Lake Buena Vista) and Sizzler on I-Drive (also in Kissimmee and Lake Buena Vista) offers cheap eats - use coupons from free mags or from coupon booklets - great for breakfasts starting at $3.99 and evening meals.

Also try Sweet Tomatoes at the north end of I-Drive, all lovely salads, fresh soups, pasta, jacket potatoes and sweets for very reasonable. It's a  little healthier than Golden Corral.

Great Western Steakhouse on I-Drive (almost opposite Wet'n'Wild) offers a cheap-and cheerful atmosphere with an all-you-can-eat buffet but the food is delicious.