Holiday time planning for Universal Orlando

I know that UO is more chill and needs less planning, but I am not that type of person. Trying to create my spreadsheets for Dec 12-13th and I am not sure what shows times are. I have Macy’s parade for 5 pm, Mannheim Steamroller for 6 pm. I am not sure if those are true yet.

When will holiday events with times be announced? I want to add Grinchmas to my schedule. I don’t know what other holiday offerings there are.

I am an AP holder, so I have been many times, but not for the holidays. this might help. Universal tend not to release much information in advance with regards to timings to prevent complaints when they change.