I too, have been turned down for a reservation at a very nice resort in the Traverse City area. It is a "condo" style resort where the lots are privately owned and deeded. Owners can allow their lots to be rented when they are not there, along with a few developer lots that remain unsold.
We had stayed there in the past when our unit was under 10 years. On the 11th year I called for a reservation and was told that it could not be accepted due to the age of our rig. It was explained that the binding rules from the lot owners association (HOA) required enforcement of the 10 year rule, and she could not accept the reservation over the phone. We could have made a tentative reservation and risked being turned away upon arrival after they inspected our rig. We choose to drive a hour north and check in at Hearthside Grove where we were cheerfully accepted.
What really gets my attention is so many people purchasing lots at that resort and being forced by their own rules to buy a new rig every ten years in order to comply.There is an exception for older rigs being "approved", but that risks only one owner objecting and you couldn't even use your own lot!
Now that we have a newer rig again, we'll return to that resort. We will go there because it is very well maintained, has all the amenities we enjoy, is priced competitively with other campgrounds in the area and is located in an area that we enjoy.
Tom and Barb
'07 Winnebago Voyage 35L
Workhorse W22 chassis FMCA 219315