I would confirm what chassis it is and then schedule an appointment with the authorized local service center. Tell them that you want to be present to learn about your investment. Yes it may cost a little bit more but you can see everything done and checked properly and make notes as you go. This will go a long way with your comfort level.
The dealerships are mostly used to make repairs on the motor home itself being what is built on the frame.
Before going too far be sure to check the DOT code date on the tires. If you have a 2002 coach they could be 2001 tires and may be up to 11 years old. If they are over 8 years old I recommend replacement. If you have a blow out it could do much damage to the body etc. not to mention the chance of an accident.
Enjoy your new rig and may see you down the road