Well I wouldn't drink it because it takes away your energy around the park. I really wouldn't give kids that anyway. Water, or even lemonade or 7up might be even better. Try diffrent fountain drinks. Not pepsi or coke!!
Unfortunately, it's Coke. We always stop at the grocery store for Pepsi and Mountain Dew when we have a car. If no car, then we find the whole family is drinking only water after about two days.
I do have to say one thing. Although Coke keeps trying and trying (mello yello, Surge, Vault) they will never come up with something better than Mountain Dew. Pepsi definitely has them in that category.