Sorry @BusyBee280!! I forget only Canada has tooneys. It's a $2 coin! So all drinks cost the guests $2. If you think of how many shots are in a 40 of hard alcohol, x $2 per shot, it should generally pay for itself. (Give or take all the mix ins and cups and what not). I have a lot of guests that heavily drink, so an open bar was just not an option for us. I know when I go to a wedding that has $2 drinks, I am more than happy with that price.
and @stefadile - I don't think it looks cheap at all to not offer an open bar. Every now and then we go to a wedding that has a open bar, but it is generally always paid for by the parents or something. To fund free alcohol for all yours guests, all night, yourselves, is a huge extra cost to the wedding! Not to mention how much get's wasted when its "free". People grab 2 at a time, the ice melts, they toss it and go grab another one. Plus people go overboard and then they're all a drunk mess. I would suggest just having a cheaper bar, such as $2 a drink or something. (or 2 free and the rest full price or something like that)