I would make sure that, when you do the walk-thru, the coach is hooked up to the water and electric so you can check all the faucets, lights, etc.
When we picked ours up, the guy said "oh yea, I went thru it with a fine tooth comb to make sure everything works. Don't worry about it". Well, we left from the lot on the maiden voyage as well, and found several little things that got past the "fine tooth comb"!!
TV - 2011 F-350 Dually Lariat 4X4
5er - 2010 FR Sierra 355QBQ