I have had the Tesla Ranger drop by in Billings from Idaho Falls to install my garage door opener in my Model 3. He makes the rounds in Montana at least once a month. Good experience for that purpose. I haven't had to schedule a more urgent visit but the Ranger is good at what he does and easy to get in touch with. Meaning I have his cell number. We have by his estimate at least 20-30 Teslas in Billings. The nearest service center is over 500 miles away for us in Billings, located in Spokane, Denver, or Salt Lake, so there's that. I scheduled the mobile service through Spokane, which is closer to you as is Idaho Falls. They actually pick up the phone. Good thing is that at 9k miles I haven't even had to think about "service".