Payment charges for before & after school care in home

[Dory]

Hi, I'm new to this site but have found it very helpful so far. I am trying to get organised so I can advertise for before/after school care in my home this Sept. My question is: Is it normal to charge a client a full daily fee regardless of whether or not the child will need am or pm care, a few days/full week? As I see it the child is taking up the spot. If I'm only allowed 5 children in the home, I can't fill empty spots with more kids to guarantee my wage as I will be covering PA days & other holiday days. On those days I would end up with extra kids. I hope this makes sense. Thanks