Jim Conlin asks (amongst other things):

What kind of operator's licences would be needed?

The really big question is "What kind of insurance would you have to carry, and
at what cost?" ;-))

Other practical considerations include:
a) Would the harbour master approve?
b) Would folks on nearby moorings sink it before 10pm?
c) Would you need a liquour licence from the town, the State, or the feds?
d) Would it need 6' high lifelines to stop (discourage?) drunken people from
leaping over the side furthest from he swim platform?
e) Well, I 'm sure there are more, but they haven't popped into my head yet.

Steve