Are they requiring negative COVID tests or vaccine proof to get in facility on Dec 23rd, 21 ?

No

Contact the venue.

No not at all

I was never asked to see any proof of vaccination.

Just went to no limit concert. It was posted that they were requiring vaccine or Covid proof. But they never asked for proof at door

No, they do not

they never checked when i went about a month ago

They didn't say anything the last time I went

They didn't at the Black Label concert but check the website to be sure