Yes that would be the ideal way, it would be a hell of a lot easier on mybehalf too!
From last experience ie dinner cruise, we had lots of interested people but only one person rocked up. The only reason why iam doing the deposits is to make sure we dont waste Shauns time, as he could of booked other things on the day.
I thought this would be a good idea to get genuine interested people and reward them.
THose are my thoughts.