There is a great food court in The Shops at Houston Center two blocks from the GRB. Food is definitely better and much cheaper. Not many shops there. Just a great way to take a break, get some good food and fresh air. As far as the debit and credit card things go, if your card is getting swiped through a wireless thingy, your information can get captured by an unscrupulous person. Happened to us at a gun show. I only use my credit card now. No debit.