Oiling to the valvetrain, is a big issue for DW cars. Make sure it gets plenty of oil to the rockers, and springs for the drives. We have changed oil in the WalMart parking lot. As Clark said, buy a new drain pan, and let them have it back when you are done. Joel checked valve lash every night, when we arrived at the hotel. That way it was ready for the next day. Joel also books rooms the instant the tracks are announced for the next year. If you don't get in, cancel the rooms. If you don't get in, go anyways, and wait for them to open up spots on tech day. It has never been full yet, and doubt it ever will be.