Posts like this always seem a bit strange to me... Not sure what things are like in Florida, but I eat out every day and have never had a problem in ANY restaurant. May just be that I got lucky with the 30 or so restaurants I frequent.
I know it's nice for people new to OC to read about "safe" places to carry, but negative encounters have been so rare (at least for me) that this is like reporting that you DIDN'T get struck by lightning today.
PS. I hope your friend is successful with their restaurant.