I'm helping to plan a 10 year reunion for my elementary school (I know, crazy huh?) and I need a good source for relatively cheap wine and beer. We're on a very tight budget as we have no funding, don't want to charge a lot and need to pay for food, the place and a class donation. We're expecting around 30-40 people.

Any help with cheaper sources for beer and wine in the Chicagoland area would be appreciated!