Dieselmatt,
to the forum and to RVing. You'll find it to be a LOT more comfortable than tent camping.... especially when you set up in a rocky field LOL
Since you're new to RVing and will be picking up your first ever RV in a few days, you should "mosey" on over to the GENERAL forum section and look in the KEYSTONE QUESTIONS section. The first entry is a PDI (pre delivery inspection) checklist. Download it, review it, and take it with you when you pick up your new RV. It will help you cover all the equipment in your RV, and guide you to make sure you know how to operate everything. There's a heck of a lot to know and to try to remember during that couple of hours and you will be bombarded with information. The PDI checklist will give you a place to write down some notes and also guide you to areas the serviceman may skip over during his orientation.
Again, welcome to the forum and we all hope you are as happy with your new RV as we are with ours...