Dec 18, 2020, through Jan 2, 2021 are block out dates during which the Gold Pass (both Florida and
DVC) cannot be used for entry to parks. Annually, you get about a two week blockout , both at Christmas time and Easter time, but otherwise there are no block-out dates.
Only Florida residents can get a Florida Gold Pass, so if you are not a Florida resident you cannot purchase it (and being a DVC member does not make one a Florida resident). The DVC Gold Pass is really the same (including same block out dates and same price) so I am not sure why, if you wanted a DVC Gold pass, you would not just buy one instead of getting a Florida gold pass first. Moreover, if you have the Florida gold pass there is no real reason to turn it into a DVC gold pass, except possibly at time of renewal which likely can be done.