Coburg; has about 20 or 24 sites, known as Camp Monaco, in front of the service center. You show up after 1600 the day before your appointment and they will give you one on a first come first serve basis. Should they be full up there is a large parking lot next door that you can dry camp at. None of the sites have sewer but there is a dump station.
At 0700 on the day of your service someone will knock on your door and take your coach away. If you are there for multiple days they will deliver it back to your same spot at 1600 that day and then the process will repeat the next day until finished.
There is also a nice RV park across the Interstate, I can’t remember the name off the top of my head.