Okay, so I don't want to rain on the food parade but you really don't want these girls having a belly full of food while they are having fun with you. Not sure if you have ever taken a date out to eat then run home to do the deed right away, but it's not a very sexy feeling for either of you and an hour to digest a big meal AT LEAST is a good idea before extracurricular activities, hobby or real life. Imagine running/sprinting a mile after a big meal...what happens to most people? I think of the episode of Band Of Brothers (HBO) and the Spaghetti And Currahee scene. Not saying it's going to happen, but I'd be concerned.
And i am not saying they shouldn't eat, but light snacking throughout the day is a better option...I'd bring them snacks, fruit or drinks (non-alcoholic) as opposed to something heavy...but this is just one guy talking, based on the few girls I have talked to about what they eat in a day. Or get them something that will hold in the fridge until they can enjoy it at the end of the day...then you'll have them thinking of you before they go to bed