Fifth: What about very seasonal resorts? What do they do?
Again, I will take you to Ocean City, Maryland. This time to a VERY small resort: Sandy Square. Sandy Square is the smallest resort I have heard of, consisting of three (count 'em three) units, all of which have three bedrooms and balconies overlooking the ocean. The remainder of the units in the building are wholly-owned condos.
Now, beaches in the northeast have very definite seasons, and some weeks are highly sought-after, whereas others are in very light demand. Yet, by law, every week must be charged the same maintenance fee for the same ownership interest, regardless of desirability. One solution used by some resorts is to move to a points-based exchange program, but sometimes that is not practical or desirable -- particularly since owners of the best weeks have no desire to surrender any of their rights. And why should they?
Closing down for the season was an option, but then staff and cleaning services tend to leave, necessitating re-hiring each spring. And other costs -- such as utilities and property taxes -- continue. Furthermore, leaving the property closes up can cause mold to form, and that "musty" smell that people with summer cottages may recognize.
But, what to do? Sandy Square offered owners the option of swapping from the winter weeks into better weeks, thus making owners happier (and more willing to pay their maintenance fees), and took the unmarketable weeks, and put them into a "right-to-use" program. Because the law requiring all weeks to be charged the same maintenance fees only applies to the "same ownership interest," Sandy Square was then free to offer much lower maintenance fees (about 30%) to the people in the "right to use" program (15-year commitment by the resort, cancellable by the user on two years' notice).
Now, at 30% of the cost of an owned summer week, suddenly the winter weeks were marketable --especially with an exit strategy. And the costs of maintaining the units over the winter are covered, so that the units get used, cleaned, and kept up all year. And the staff doesn't get laid off. (Most people probably deposit those weeks for exchange, but some people want to get away, especially when they live within driving distance. And other people exchange for them.)
The point is, there ARE solutions out there. Management needs to exercise more imagination. Or close down. As I have said repeatedly, refusing to accept back deeds from owners who don't use their units and can't get rid of them without paying substantial money (like closing costs and advance maintenance fees -- sorry, Brian) is NOT a proper business model IMO.