Over the years with different motorhomes, we've had an engine replaced, a transmission replaced, and a rear end replaced, all while we slept in the motorhome every night. We did have to leave during the day sometimes while work was underway, but we just took our toad and went sightseeing for those times. The only time we actually moved out for a couple of days was when we had some paint work done, and didn't want to deal with the smell. That time, we just rented a cabin at a nearby RV park. We've found most shops to be very sensitive to full time RV'ers needs, and will go out of their way to accommodate us.