It's pretty hard to drink a lethal amount of liquor though, it's a lot easier to consume a lethal amount of GHB, probably easier than any other recreational drug (or club drug at least). I also think one of the big concerns with GHB is people spiking drinks. It's incredibly easy to slip into a drink.

At one of the nightclubs I go to, they have fairly prominent signs warning about GHB, and telling you that you will get a lifetime ban if you're caught with it. Most other drugs will just get confiscated (and often consumed by the bouncers), or at worst kicked out for the night.