Cool! Congrats! It's a great RV.
In case you didn't see my post from a while back, be sure to stop at your favorite home-improvement store and buy some Velcro One-Wrap
Cut that into appropriately sized lengths and use it to tie all of your dual-handle cabinet doors closed. If they come open and get caught behind a slide, they will be destroyed. (Happened on my first time out after leaving the dealer, so don't delay.)
That doesn't take care of "open drawers" hazard, so ask your tech to show you how to open just the main slide first so you can walk inside to see if anything has come open before you open the other slides.