Why just do the coke before getting into the club then?
Not a club guy, but I've been into few, and I get that the coke thing is not so much for personal use, but to get the whores amped up to suck cock, but if the whole deal is that the bouncer is being a hardass about the coke is probably because the club is getting pressed about it about the cops, or too much dopes start to bring a shitty crowd that inst worth the hassle.
Regardless, just say, okay, get the whore in the car, do the coke, and get back to the club, problem solved and you don't have to be Karen.