I live in Alaska, the DP stays stateside wherever we happen to be when we want to fly home for a while.
Yes, there's usually a CW someplace within a couple of hundred miles, but they're always so backed up with work you can't get anything done.
Oil and lube is almost always done at a Speedco and usually there's a Blue Beacon next door for a wash.
For chassis or engine work, it's a Freigtliner shop.
For little work, it's usually a mobile RV tech at an RV park.
If the non-chassis work can wait, we keep a list for when we get back to Vancouver, WA for a very good little RV shop that we make an appointment with, give them a list ahead of time, and they get us in and out within 2 - 3 days.
Bill
Nodwell RN110 out moose hunting. 4-53 Detroit, Clark 5 spd, 40" wide tracks, 10:00x20 tires, 16,000# capacity, 22,000# weight. You know the mud is getting deep when it's coming in the doors.