No I'm not talking about booze. All boats will have deck leaks from time to time and at some time there will be condensation. The first task is to minimize these leaks and reduce the opportunity for condensation. The second task is to design all lockers etc. to maximize drainage and ventilation. Two simple solutions are lining all lockers with "Dri-Dek" or similar and installing drain (limber) holes.
p.s. I have no connection with Dri-Dek etc.