I would look into a Pacific Pride cardlock membership as well.
A cardlock is just a set of fuel pumps. No convenience store, no individual restrooms bigger than the new Austin apartments. It is no frills, pull up, swipe your card, fill the tank, get your receipt and leave. However, the advantage of this is the simplicity. While other people are either waiting for pumps to come available at the place across the highway (here in Austin, the diesel pumps are on the ends, and usually they are taken by someone eating lunch and yapping on their cellphone), you can get your vehicle fueled up and be on the road.