I didn't go to any, but we had two. Made a nice chunk of change.
On our second one, the seasonal tourist traffic going past the house was so backed up from a bridge closure somewhere else leading into the general area, that we had the little girl out there flipping bottles of water to the people rolling by in their cars. Had her little sign and all.
We moved like 4 cases of water
No one wanted to stop and shop because they didn't want to get out of the back-up, so the water sales ended up covering the loss on item sales.