Take your time on the inspection at the dealership and be sure to inspect the caulking on the roof as well. On your first trip out it may be possible that you may find deficiencies that were not seen upon your initial inspection.
For myself I found no problems on my dealership PDI and found only minor problems on my first trip such as a missing curtain sash, a couple of bad GCFI outlets and an slide topper that collects water. (Slide topper has been an ongoing problem since new with a couple of fix attempts but it finally looks as if a repair is forthcoming)
Two things that have made my towing experience much more enjoyable have been my Reese dual cam weight distribution/anti-sway system and my Prodigy brake controller.
Enjoy your inaugural trip!