Had some really good experiences at the Golden Corral (Lake Buena Vista location). Relatively inexpensive and food was actually not bad! So easy to feed the kids at a buffet...
Golden Corral
8707 Vineland AvenueOrlando, FL 32821, United States
Then another gem that I learned through Disboards is Sweet Tomatoes. Lots of fresh and tasty options. If you're looking for pounds of roast beef, chicken, ham, etc., this is not the place for you - but it's such a great change to the deep fried and protein heavy foods. One of the must-go places for us during any visit.
Sweet Tomatoes (Crossroads Plaza)
12561 S Apopka Vineland Rd
Orlando, FL 32836