[Event] Cafe Caroling changes to a different event

It sounds like this might be related to: https://answers.ea.com/t5/Bug-Reports/Workaround-Event-randomly-changes-after-closing-the-app/td-p/7177064

Try force closing the game when none of your Sims are in an event and start the game again, if events pop up that are finished accept and force close again until it stops giving you events to finish.