Ok after reading all those replies I kinda forget what the original questions are .... But I'll give it a shot .... Change all your fee payments to EMT (email money transfer) so there are no excuses and the family can even set up an automatic transfer to occur every two weeks or when ever payment is required) I would send out a letter (handed to each family so they can't say they didn't receive it) outlining all your new policies .... My fees are due on Fridays by 5 pm for the following two weeks. For parents that want to hang around at pick up just have the child ready to go when the parent arrives and say " oh here's mommy (daddy) now ... We had a great day and we will see you in the morning have a nice night" open the door and wait for them to walk thru .... Easy peasy ...
Sibling rates .... Nope never .... Our salary is already capped because we can only have five children and now with the new limit of 2 under 2 the potential of having open spaces is even more so no way would I give a discount ..... I'm not from your area so I am unsure of what the community can support but it seems to me that organic Montessori would command more then )35/day .... I'm from the Ottawa area and I'm not organic / Montessori or an ece and I charge $45/day .... I charge for all 52 weeks .... I'm closed for all stat days, 3 weeks holidays, 5 personal days ..... The only time I do t require payment is if I close due to my sickness (which I have never done) .... You are young but just stand your ground .... If you plan on moving I wouldn't advertise it too much because if it not in the same demographic area that would allow all the families to stay with you then that would not be a selling point ... Most parents want to keep the same caregiver for consistency.
Good luck