Cheapest alcohol option

Costco or Sams Club

Maybe look into some local wineries if you have any nearby. Sometimes they give a discount per case of wine you buy (A case is generally 12 bottles, enough to give a glass each to 60 people.)

Costco or BJs or SAMS...Not sure if those stores sell alcohol in your state, but in VA, you can get cases of beer and wine for good prices. If you can't buy alcohol in the grocery store, like in MD, then I suggest that you go to a wholesale liquor store like BK Miller (local here). Not really sure where you are or what is available to you.

Some online options will deliver to certain states. You should check to see if your state i on the list that can receive online delivery.

Another suggestion would be to reach out to a local winery or brewery and see if they might be interested in giving you a good deal on case pricing for free advertisement. You could suggest that you will put their card in all of your favors or mention them on the program or something.

Trader Joe's 3 buck Chuck is awesome. You can also walk in and buy cases and cases of it, and it's super easy. They'll also take back un-opened bottles.

That's what we did for wine. We did Costco for beer.

I didn't even think about wineries. We have tons where I live. Thanks everyone, Costco sounds like the place to go