If you have time head to terminal 2 Lark Creek Grill is good and open I believe to 11. You can walk air side back to G in about 15 mins. If short on time as someone else stated above Mustards is right there by gate G3 and open to 11pm as well. They actually have pretty decent food (not quite like the one in Napa ). The UC G club is.... well... bad as the evening progresses.