Welcome to our little corner of things!
The delivery of your new RV should be as thorough as possible.
(Mine took four hours!)
Make sure that they operate EVERY system on the RV. Make sure that you understand the operation of each system. Don't let them rush you. Take your time, ask LOTS of questions (Okay: lots, and lots, and lots...)
Take notes, take videos, even use a voice recorder if you have to.
Every system should be check for proper functioning, and every aspect of the coach must pass muster for appearance...
If things are found that need fixing: see if they'll fix it right then and there.
(Our dealership did...)
Good luck! Please let us know how it all goes!