I appreciate what you are saying guys, and i agree with you to a certain degree, but i don't think anybody is moaning for the sake of moaning.
Everybody wants a club busy with a great atmosphere, just not dangerously over capacity.
You can't blame customers, regardless of whether they are in the know about the venue & where best to stand, or not. Im sorry, but you just can't. The venues (and indeed the authorities) need to take the responsibility. This is a serious issue.
IF (and i hope this never happens), but
if there were to be an incident a la Love Parade 2010 or Big Beach Bootique 2002 or even something as isolated as this:
http://www.guardian.co.uk/uk/2011/oct/19/nightclub-suspected-crush-death-northampton
then you can bet your bottom dollar that as visitors to the island who go for the clubs
we will all be affected, even if not directly, by the fallout.
Of course these incidents can occur anywhere, and I'm certainly not singling out any club in particular, or even limiting this to just Ibiza. But some of the scenes i have personally witnessed in Ibiza Re: crowding have been unacceptable. You can't take a gamble with people's lives.
I'd be gutted as the next man to get turned away from a club for arriving too late as it's already filled-up. And if i was the club manager/promoter looking out at a queue of people who i physically cannot fit into my club i would also feel gutted. But seriously, it's the lesser of 2 evils.