You can go to Karakter. They have showers and they will hold your luggage at the bar. Do NOT go anywhere and leave your luggage in the car. Please don't do that. Driftwood has OK food, but there is NO way to know whether you would be lucky enough to get a parking spot out front, but regardless do NOT try to leave the luggage in the car.

If you decide to go to the airport, there is a food court downstairs and there are a couple of restaurants upstairs (inside security) where you can get a full meal. Or you can go to the Souliga Lounge. It is $20 per person and includes light snacks, like mini quiches, chicken wings, etc. and wine (but not hard liquor, for which you have to pay). They have comfortable seating, TV's, etc.