I wish we had done that. We booked for a family of 4 and had to pay our deposit within 5 days and then because we booked for June 1, we had one month to pay our balance in full. My husband and I get paid opposite Fridays so we did an even division. One week he paid the next I pay. This is my week and next week will pay us off!!! We need to book further ahead next time too.
P.S. - We have to learn this dock dance :-)