It’s probably too late for you to get a hotel at this point. They normally book out a year in advance. I would look at Cashmere or Wenatchee for lodgings.

Be prepared for a huge crowd and cold weather. Make sure your tires are in good condition and you have chains (and know how to use them). Check pass reports for Bluet and Snoqualmie pass. I would get there and park an hour before everything opens. Parking is extremely limited and you need to be there the entire day to enjoy the tree lighting.

Plan on visiting the sites in Cashmere and Wenatchee. There’s really only one days worth of activity in Leavenworth.

I just saw on IG that they’re about 80% done with the lights. You can always check their website and live cameras. It’s magical but gets reallllly crowded so plan ahead for parking. Lots of stairs and steps up and down into restaurants and shops so FYI. It’s so easy to walk around and see almost all of it in a full day. Great brats, Bavarian food, brews and wine. There’s no Uber or Lyft so use the local cab company if needed. We’ll be there around the same time with toddler and dog in tow. Godspeed.

If you get there on the first day nothing looks like Christmas, and there's one guy sitting there next to a giant cardboard box, and he is trying to untangle the biggest string of lights you ever seen.

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Best hotel is Enzian Inn. Great breakfast buffet , comfy beds, Bavarian decor and underground swimming pool/spa. They also let you use their cross country ski gear.

Do you especially enjoy tourist traps? That's what Leavenworth is famous for being.