I'm not kidding when I say this was a fast trip in June. 24 hour drive, 36 hours in Idaho, 36 hours in Utah, 24 hour drive. That's how our 5 days were structured.
We had a water balloon fight too.
There is a law about water balloons. You can spend hours filling them up and getting ready, but there will never be enough when it is time to play with them. The disappear quickly!