I volunteer in class rooms, help take tickets at the door. I think on day I'm a where ever they need me. I go the day before and help set up. The only thing I don't do is the take down.
And as I said the added bonus is staying with my DS.
I've been doing this for many years. When I worked I would schedule my vacation during this time. It is so much fun. It's a little later this year, usually it's on my birthday. What a great way to spend your birthday, huh? One year I forgot to take my hanging clothes. Fortunately my DIL is close enough to my size that I could wear her clothes. Now I start packing the car the night before.