Sounds like a great idea and good fun for the kiddos! Make sure the costumes are not too loose (sprocket / chain / rear wheel etc) Hope the turnout is creates memories for the youngsters!
Don't go, will be close to 110deg, there is some SOFT blow sand this time of year and the dunes are difficult to read especially due to the suns placement in the sky minimizing shadows. Weekend would be miserable at best for a first timer and possibly deadly.
Easy, lack of corporal punishment and a sense of somehow believing they are the center of the universe and therefore inconsiderate of others. That or just dumbasses you choose (-=
I certainly hope not, though they would probably stick to the "little dunes" if they are used to Pismo. We went there once, I was done with the duning in about an hour, camping / riding on the beach was the best part
Mark the spot before the battery dies. I found mine out there buried in the sand using the app. When I pinged it a girl in camp who was helping me look for it was standing over it and felt it vibrate. it was buried in a high traffic area. That app is ACCURATE.