My guess is several events in the First Quarter will try to make a go of it, although there will likely be some downsizing in terms of midways, grounds acts and more than likely no concert entertainment.
The Florida Strawberry Festival announced yesterday they are going to run, but they are NOT having their concert lineup this year.
From what I've been told the music industry side of things they are planning to be back out in Quarter 3 and Quarter 4. You've probably already seen several of the stadium tours have rescheduled dates and announced for this summer.
There remain a lot of unanswered questions for now as to what requirements will be for large events post-pandemic. Things probably will never be back the same as they were but the big thing most of us are waiting to hear is does the vaccine work? Can it be mass distributed by summer? And what will the new look normal entail once this is all over?