How much ginger ale per gallon of punch?

There is no one definitive answer to this, as the amount of ginger ale you add to a gallon of punch will depend on your personal preference. However, a good rule of thumb is to start with 1/4 cup of ginger ale per gallon of punch and then add more to taste. Alternatively, you can gradually increase the amount of ginger ale until you reach the desired sweetness. Be sure to taste your punch as you go to make sure that it is not too sweet or too strong.