I'm at this Petro on I 75 exit 368 in Florida, I went to the restaurant to eat and I wanted to use my rewards card points to pay,the manager said I can't use my points in the restaurant, why?

That's not a true statement. I don't know what happened with Asmerom. Must had been a miss understanding. I used my points in the Restaurant yesterday. I had read this statement before going in. I asked a Waitress about that and told her about this question being online here. She said I could use points. Went back in the eat an hour later. Had a different waitress. Paid with points no questions asked. By the way, The meal was great. Had the Buffet. Service couldn't had been better.

They don't allow usage in the restaurant. Only in the store..and inside of there you can use them for anything. Including gift cards. Other uses are of course for fuel and vehicle maintenance.