I think at the end of Terminal A there's a new Quaker Steak and Lube, if you like wings and such. They have a website at
www.quakersteakandlube.com
If you don't have a club membership, you can go up the escalators to the upper level in the main atrium where the club entrance is and relax. There's lots of chairs, restrooms and a good view without even going into the club. Not many people know it's there.
Lots to do at Robinson Towne Center too.