Fire up the fridge the night before. Get Valterra twist on valves for the sewer pipes. Be prepared to change a tire (lug nut wrench, bottle jack, Lynx levelers, good spare). Check over all systems before heading out. Sanitize the fresh water system. Practice turns in a big parking lot if you haven't towed a RV before. If you have time grease the wheel bearings and check over the brakes.