It seems to me, and my first skim-thru that:
1. The district isn't really dissolved. It's "rethemed" (
) into a more modern district. In a model that probably already exists all over Florida as a supercharged Home Owners' Association. The language, I would guess, is a copy-paste from existing Special Districts. It's duties are basically the same as any district's board/council. The language is almost exclusively about the infrastructure.
2. With the district not really dissolved, then the bond issue is moot. The new district just takes up the role of responsibility of all current and any new bonds. Disney still pays county tax and still pays extra tax to the revised district. So, there is no issue of the counties being stuck with RFID's bond bills.