I do not do breakfast. If the kid shows up and hasn't had breakfast the parents must take the kid home feed him/her a non-sugary breakfast then come back. No food in the belly = not ready for daycare,

if you want to do breakfast and charge them for it, I would charge $10/day

As for showing up early either charge an early drop off fee or don't answer the door. For me if they really want to come early I just tell them my fee is $60/min. I am SO NOT a morning person. I get up 10 min before I open, you want me up earlier you will have to make it worth my time. This stops parents from coming early.