I think it hasDoes the park always run the Christmas event after the main day? It just seems a bit odd to me to have an event still running themed to it even after it’s all happened.
I remember one year WMSP ran theirs after Christmas and you could still meet Santa and thank him for your presents (that was an odd idea which never caught on!)
I know a few places keep the festive event - usually remove the grotto offering but keep a lot else due to the holidays