I have used this for many years and it has always been a hit at any gathering.

Punch

1 pkg. strawberry kool-aid
1 pkg. cherry kool aid
1Qt. ginger ale
3 Qts. water
1 small can orange juice ( concentrate)
3 oz. can frozen lemon juice ( lemonade)
2 cups sugar

Mix all and add ice cubes just before serving. If putting it in a fountain you may not be able to add ice cubes , just taste and see if it is too strong and if that is the case just dilute with a little water.
Good luck

Editor's note:
If using an electric pump on the fountain, strain the pulp from any juices used in the punch. - Happy Wedding! Betsy