Congratulations & welcome to the forum. There are several PDI (pre delivery inspection) lists out there. Here
is one for motorhomes that is fairly complete and can be used for your new Zinger.
No matter how good the dealership is, they will want to rush through and get you out the door. Remember that you spent literally thousands of dollars and don't leave until you are satisfied everything is working fine and you are comfortable with how everything operates. I still remember our first trailer and the last thing they went over after hours was hooking up to the truck. I was tired and wanted to hit the road. They were tired and wanted to go home. I didn't quite get it and the next time I hooked up I had to call for help!