Welcome to the forum! Before you go to pick it up, print out a PDI checklist (pre-delivery inspection). There is a good one on this site:
https://www.rvwiththetanners.com/pre...ery-inspection
Ask if it is OK to video your walk-through. You'll appreciate that later when you are trying to remember what was said.
You'll find folks at every campground who will help you, too. You're headed for some great adventures!