to the Keystone forum and congratulations on your new RV.
There is an excellent pre-delivery checklist (PDI) located in the very first thread in the Keystone Questions section of this forum. You definitely want to take a look at it, possibly download it and take it with you when you go to pick up your new RV. It will help guide you through all the RV systems and help you cover everything while at the dealership. It is much easier to get things repaired or "tweaked" before you leave the lot rather than have to bring it back for service after towing it home.
Again, welcome, we're happy to have you as a new member and look forward to hearing more from you as you get familiar with your new RV.