Do/will your kids drink it?
I've found that my kid (four years old) isn't any more likely to request the Crystal Light vs. the water we take out with us, if she does want some I think it's only because she doesn't want to be left out. Now the lemonade at home is a different story. Girl loves her lemonade.
Would you be more likely to let your kids have 100% juice or throw back some Crystal Light with you? Do you think they notice the difference?