In my experience, it is often quite telling to see how the child behaves, sleeps after an extended absence. I am talking about the few children I have had who have a hard time going to bed at home during the week and the parents ask for no nap. Usually, these are the kids that want to go to sleep earlier and stay asleep longer the first day back from vacation, because they are over tired from not napping at home. If they truly don't need the nap, then why are they the first to fall asleep? I think it's because here, we have a routine, and at home, not so much.