Another way to do summer on the cheap is with the $1.00 movie theatres and matinees.
We have a theatre not too far away that is $3.00 for any, and we do the early shows whenever we can. Where we are, matinees are $6.50 and of course, we bring our own snacks. When we can't do a cheap movie (no appropriate movies for Mason), we use our Entertainment book and go to a theatre that has a BOGO free coupon. One way or another, we're getting a deal on a movie!
Check out your area and see where you can do something special and save a little money. You'll be surprised!