It's not about being too drunk though, it's a steadfast rule that is saying no matter what state you're in, you are not allowed to re-enter the premesis.
This will hurt some business massively in my opinion. I was at a place on the weekend which has no smoking area, forcing you onto the street. I won't ever go there once the law is introduced, and I'm sure many other would be the same.
This is what irrates me. They bring in a ban on smoking inside, but do not have the infrastructure to support it. It's no illegal, we CHOOSE to do it, why should we be penalised for it?!
End rant.