Any guesses on which water park will be open in Dec?

[Disneygrl71]

First time we will be doing a water park, I've heard only one will be open, any guess which one?? TIA

 

[lullwater]

This past December and January Blizzard Beach was open while Typhoon Lagoon was being refurbished.
Typhoon Lagoon was open in Oct/Nov while Blizzard Beach was being refurbished.
Not sure if this is the usual schedule.

 

[Queen of the WDW Scene]

They can always switch it up but for the last so many years that I can recall Blizzard Beach is the one that is open in December.