Thank you everyone for you great suggestions!
We were travelling with a big group, and as you know it's hard to please everyone, but most of the spots we went to were great.
Ming Court was amazing! Everyone loved it.
My parents are very frugal and wanted to go to a couple of places that provide coupons, and they winter in St. Petersburg so are familiar with some of the chains. My dad chose Cici's for pizza buffet. Admittedly not the greatest food I've ever had, but good enough for the price and quite a variety to choose from. My mom chose Sizzler, and even my MIL who can be pretty 'stuck-up' said she enjoyed her meal there.
For our night out without the kids, dh and I went to Black Angus as it was close and we both felt for steak. We both really enjoyed our meal there as well. There is a coupon in some of the booklets for this but beware: half the items on the menu are excluded from the coupon!
We also took the kids to the huge Deli McDonalds near the Prime Outlets (can't remember exact location) and we were so impressed with it! I have never seen anything like it in my life! My dh had quesadilla and I had veggie pizza and both were very good. The kids were thrilled that they had an arcade upstairs where they could collect tickets to get a prize, as well as the 'traditional' climber area.
The only restaurant we were sadly disappointed in was Shoney's. My parents frequent this one in St. Pete's, too, but none of us were happy with that one.
Someone just mentioned Cracker Barrel. I am a huge fan for breakfast! My family for some reason doesn't agree with me, though (perhaps it is the ever-present grits??), but I persuaded everyone to go on our last morning there and it was very yummy as usual!