Is it really Christmastime if you don’t have to go out and fiddle with the lights?
Wearing heavy gloves, I always prune my holly tree on a sunny day in July and make sure the lights are all ready to just flip the switch in December. You can’t even see them until I turn them on, so I just leave them there. Holly leaves are like needles so you really don’t want to tangle with them.
Of course, some of the strings are old. Some have been replaced with newer ones over the years. All different kinds of adaptors are required to get the old same-sized-two-prongs to marry the two -pronged-two-sized ones and the three pronged grounded ones. I am well-equipped for this;

This old house had no outdoor outlets when I moved in, so I had this one installed on the front porch some years ago.

Always worked fine until, for some reason, it decided to start tripping its own little circuit breaker last night. Ah, well. I just ran an extension cord around the house, through the snug window, and and plugged it in there. Closed the gap with tape in a holiday color and set up the timer.

I do love creative problem solving.

Be merry and bright!