I took Uni last year and she was fine. It was in a church parking lot and there were lots of kids and a few dogs. Lots of room to spread out. I didn't think she seemed to mind, but now I'm not sure. She seemed happy to me.
But, then again, we live near Angels Stadium and there are fireworks going off like every other night it seems, so i guess she's used to it?
This year the fireworks show got cancelled in Anaheim Hills (where we went last year) due to lack of funds/donations!

Hopefully we'll get invited to a bbq party instead!