I went to Villaggio yesterday and noted there was a ban. Interesting enough, the only people I saw banned were Pakistanis (males) wearing the typical clothing (dunno what's called). All the other males who were wearing western clothes did manage to come in, though.

Now don't get me wrong, I think they should do something to lower the crowd who is not going to spend money there (not sure how, though, perhaps charging an entrance fee or something like that). But it's interesting that they only banned the guys wearing their typical clothing.