If the spot is open now and could be filled immediate, but she doesnt want to start until September, then in that case i charge 60% of my monthly fees, and the parent can send the child once a week for half day.
If the spot is not available immediately, then I get my usual 2 week deposit, a money order for the last months care, and my 50.00 start up fee.
The only catch is that as others have stated by taking a deposit, the are by law entitled to the "service " for that fee.