If, however, you are in a position to shop for your own alcohol, consider the wholesale approach. There are several discounters to investigate. Sam's Club requires a membership in order to make purchases and they carry a nice selection of brand name beer, wine and hard liquor.
Kegs are available.
The second option is local retailer Rite-Aid. The selection of name brands is extensive and discounts vary based on what you are in search of. Most of us look to Rite-Aid for pharmacy and drugstore items, but be sure to seek out their liquor department. So make the decision early on in your planning stages to factor in alcohol costs for everyone or skip the alcohol approach entirely.