Congratulations! Sounds like a nice change. The dealer will generally have everything setup when you do the walk through. Once you inspect you may want to have them return the coach to driving condition. Then you and your wife set up the coach as if you have stopped to camp. Leveling jacks, slides, water, cable for TV, front and side shades, appliances, furnace, AC units, generator and anything else you might have questions on. Plan at least 4 hours to go through and learn all of the systems.
Then start to enjoy! Safe travels
Ron and Diane