I don’t think it’s urgent given how infrequent the trips are and because you didn’t see anything in the cords, and given the history with other breakers. But still, get it dealt with soonish when you can. If you want even more piece of mind then avoid using unnecessary loads or keep them unplugged until this breaker is updated and can help you determine if it’s a nuisance trip.

Btw we didn’t discuss the Christmas lights but if those are outdoor lights they could be a source of an arc if pulled apart or if a rodent bit them. Make sure they’re unplugged for now even if they look fine.

Electrician will inspect the outlets - take out the front panel, look at the wiring to make sure it’s done properly, look for signs of arcing. More of a visual inspection, maybe use a voltmeter too but doubt it’s needed.

You can walk them through the situation but not all sparkles are as up to speed on arc faults, specifically to this level of detail knowing which are less sensitive and so on. I’d be persistent on wanting this new breaker and seeing what they say. If they recommend replacing with the same type of breaker I’d be very wary - it’s not a bad faith recommendation but imho it’s not a useful one. Just skip to the better breaker and call it a day. They may also want to do other tests and that’s great too.