Congrats on the new rig. Now do yourself a favor and find a complete PDI list on this forum. When you do your walk-thru, take your time and follow the PDI list completely. Your dealer may want to rush you through but don't. Look over everything and make them operate EVERYTHING. Run the furnace, run the heat pump, run the AC units. Fire up the water heater. Open and close every door and drawer. Turn on the TV's, turn on the radio, turn on the fridge and microwave.
You can find posts on here where someone has gotten home with their brand new fiver and something didn't work. Don't be that person!