The same thing happened to us last year. I had paid for my son to take the Explore and I thought everything was set until I saw that the Pinewood derby was the very same day and I just couldn't take that away from him. This is his favorite part of cub scouts.

We could not reschedule in our area. When it came time to register for the Explore this year we just had too much going on so he didn't take it this year either.