B.W.
Hi K.! I live 1/2 hour from the Dells and have two older children ages 9 and 15. You'll have a wonderful time! I'd say to make sure to bring warm clothes or something warm also. Even in July we can have the old 'cool' night.......and moisture in tents can make one cooler. Bug juice for the insects and good sunscreen! Have fun........a million places to get wet!