We just got into this sport and my kids, 7 and soon to be 9 yo. love it. They are always on the look out for cool things to trade in the caches, I can't walk through a store now without them scouting things to get for caching. So far we have only done 6, we did it on Easter, here are my kids and my nephew, my nephew loves it and got it Dad to start so now they have their own account.
My husband took my son and his buddies on my son's birthday, the boys had a blast. We have a night one planned this weekend and my daughter is taking along one of her friends.
We have two vacations coming up and we are planning out our caching days while on vacation.
This is an awesome way for families to spend time together. We decide together which caches we are going for, the kids do the decryption for clues by hand if there is any. We love it.