Calypso Cay Vacation Villas in Orlando, FL
I don't know your resort at all, but it does not seem that you want to invest much time or effort to try to sell your interval on your own (I am assuming for the sake of discussion that it actually has any resale value in the first place --- I personally do not claim to know).
Given your apparent approach / position, you might consider contacting a LTRBA broker in FL who charges fee / commission
only upon sale.
You indicated seeking specificity; I have personally met and would recommend Tom Tubbs at Island Consulting Realty in Sarasota, FL. Nice guy, completely honest --- and if your interval actually has no resale value, he will simply tell you so.
For the record, I have no affiliation with Tom Tubbs or his business or with LTRBA, but I nonetheless respect their honesty and their approach.
Seems to me at least an option worth considering if you are otherwise unwilling to expend any time or effort on your own.