I never thought of the locker idea, I think it's a great idea. They just have to install a change machine so people will have change for it. Makes sense for the club as well as they wouldn't have to hire people to handle the coatcheck.
this may sound a bit out there, but i think clubs should consider using plastic cups. i was about to sip on my drink once at ss, and some guy wacked my elbow. the glass hit my tooth and chipped it. biggest buzz killer ever!