Who said anything about a wine bar?
See posts #5 and #13
Possible colloquial difference, maybe big cities actually have specific wine bars which only sell wine... if so my mistake, however where i come from generally there are bars and pubs (with bar / wine bar being the same thing) and you dont have bouncers deciding who is good enough to go into a pub....... just so long as you are not filthy, a plonker or utterly wasted.
Technically there is no difference between a pub and a bar (a pub has a bar so in effect all bars are pubs, or is that all pubs are bars??? however in general terms in the uk there is very much a difference between a pub and a bar, a pub imo being a more traditional place, likely to have been around for ages, largely unchanged for generations, where as a bar is more following local trends and may change radically with different owners.
as Chris already said, bars tend to charge a lot more and because they often are trying to big up themselves, they have a habit of trying to appeal to a certain type of patron.
given there were bouncers on the outside and it was specifically stated bar not a pub then that seemed pretty clear the type of place. i can delete the word wine from my post if you prefer.
maybe i am painting bars with an unfair prejudicial stick... but just saying my experiences. Traditional pubs to me are far friendly places and a lot less superficial.