Yes we carry an air hose. It is a small hose Rick found at Harbor Freight. It is similar to those "coil hoses" you see on TV.
As for your wife driving. I drive ours and when we get to a campsite I am the one that backs it in and Ricks "spots" for me. Rick knows where he wants the rig to be (based on the location of the elec/sewer/water and slides) so it is easier for me to back it in. Driving does take a little getting used to but it is fairly easy once you get the hang of it. A trip to a parking lot to get used to "sight lines" helps a lot. When I drive in any town I usually try to go a little bit slower. Other drivers will dart out in front of you because they don't want to be behind you, so I leave plenty of room for that. When turning I find the "don't start your turn until after your hips pass the item you are going around" theory works best. Lazy Days in Florida offers a "RV Driving Course" that is very informative and may help your wife feel more comfortable with the driving.
As for service on your coach. I usually place a call to the manufacturer BEFORE taking the coach in for service. That way you can get their opinion/suggestions on where to take it or what to watch for. Doing it this way also helps to avoid dealerships "embellishing" on their story as to why a repair isn't done properly. They can't blame it on the manufacturer that way. (And yes, dealerships make the manufacturer their scapegoat all the time!).
For factory service. NO you don't "have to go to a rally" to get service. In fact, at the rally they have so many people/units to service I am sure the techs would much rather have your unit at the factory where they can take a little bit more time on the repair. Your best rule of thumb on what the factory will and will not do is to hear it ONLY from the factory. That way you know you are getting the truth.
Rick and Karen
2016 Berkshire 38A
2011 Honda CR-V toad FB