Is the resort being renovated because of a storm, or some other unusual situation in which it was damaged?
I know this resort well, having recently owned a prime unit / week there for several years (but no longer). I would be willing to bet that any "renovation" there is strictly confined to the original two story building (the property section in which the office is located). That original building was once a 1950's - 1960's two level motel, before the property was converted to interval ownership --- and much of that original section is frankly not even "up to code". "Renovation" of that section had been discussed for quite some time --- and was likely finally
mandated by either local code enforcement authorities and / or the resort's insurance company.
The middle section is newer, added later. A third (north wing) portion is by far the newest construction, built after a fire in or around 2003.
The associated insurance claim was unresolved and in the courts for the next 10+ years (with the courts always finding in the resorts' favor at each appeal level). That mess was
hopefully conclusively resolved in very recent years, although I'm not certain. I'd bet heavily that the "renovation" at CBC involves
only the original section described previously above --- and specifically to get it into code compliance.
To the OP's specific situation and question, I would recommend starting with contacting Defender Resorts, the new management company that took over from VRI at CBC several years ago (a change which was a significant factor in our decision to part company with the place). On site staff may have neither the knowledge nor the authority to substantively help the OP, perhaps reciting a canned response, by others' direction. Not good enough --- at least not for me. YMMV.
I had personally lost faith in the CBC Board, another reason for our bailing out of one of the best units and weeks on the entire property. Between the on-site staff and the CBC Board, I wouldn't hold out a lot of hope for a satisfactory resolution. I would instead be inclined to focus on obtaining some form of assistance or alternative use / access directly from Defender Resorts.
Secondly, I would ask whoever claimed some "legal impediment" to maintenance fee refund to provide a clear and specific statutory reference or case law cite on which they offer that particular "input". It might very well be true, but as an owner the OP certainly has a right to a more specific and detailed explanation than appears to have been offered. The CBC BoD, after all, has at least
two attorneys, iirc.
The above being said (please don't shoot the messenger) I know that when the north section burned down at CBC (a dryer fire was blamed), owners of weeks in that wing were
still required to pay maintenance fees during the (several years) before reconstruction was completed. I actually bought our CBC unit / week from one of those folks, who had used it just once after that north wing reconstruction before selling.
I suspect that mf refund is a non-starter, but perhaps Defender can / will assist in identifying / providing alternative use instead. Good luck, OP.