Lots of family places to eat nearby--you are not going to be very far at all from International Drive, Sea World and Universal Escape...There are a number of decent places throughout, including a few at the Mercado on I-Drive...Also, you are close to dinner shows at Wonderworks (Shazam!-great for kids, and not too expensive) and Pirates Dinner Theater (good for kids 8 or 9 and over).
It would be easier to answer your question if you could be a tad more specific, as well...What types of food, what kind of budget are you on, etc...
I should also point out that Westgate Lakes is kind of alone on its side of I-4...You are, I'm presuming, planning on a rental car--it would be virtually necessary.