"$25 grocery rebate when you spend $50"

This puzzles me.

There are 2 new online rebates available for $25 off a $50 grocery purchase!

These rebates are issued by Coors and Miller and are valid for North Carolina residents who are at least 21.

The rebate is for $25 when you buy $50 worth of groceries ($50 must be pre-tax and cannot include tobacco, pharmacy prescription or lottery).

This offer is valid May 16-30 and must be submitted by 6/29/16.

I applied for mine and in a few minutes I got an e-mail confirming they had received the information. I had to send them a scan of a cash register tape and my contact information. I didn't have to answer any other questions and I didn't have to buy any beer.