i dun mean to know which hall you are in, but as far as i know, such things you mentioned did happen in the pub. but as you know, if you go with hall ppl, and you watch yourself, esp. girls, it gonna be fine, nothing serious gonna happen. the ones got drank are the ones intend to, they just want to drink wines in the pub. coz not many place in singapore allowed to drink so wildly, even in the hall itself.
i understand what kinda of pub you wanna go for, but why dun you go for some famous restautants? that will serve your purpose better~~
anyhow, i like the bashes held in my hall, both in the past and present.