No experience but I have a bud that has two for two weeks in KW.
On the years they don't need them the sales office rents the unit and he gets a check.
We have looked at purchasing a week for the kids when they visit us, but the kids don't want to be tied down to any "slot".
This same bud had three weeks at a TS that is 5 miles from his house. He has never stayed at the unit. He trades the time for units all over the world.
I also have a friend in Scotland that does the same with his unit in Spain.
Just some observations and possible opportunities from a FOG..