For a couple of my Navy years I was stationed in downtown St. Louis (hq for the recruiting district covering 1/2 of Missouri and almost half of Illinois).
We had a local bar we used to frequent, uh, once in a while.
A buddy of mine and I were determined to be good (actually, more like under orders to be good) and were on our way to get a burger and a coke a little before noon; but when walking by the bar on the Friday before Halloween we noticed a sign that said "Free Pitcher of Beer to people in costume." Buddy says "Too bad we can't get one." I sez, "Watch me," and in we go.
I order a pitcher, and tell the bartender that would be my free one. She starts to tell me "no way - you're dressed like that every day!" I pointed out to her that there weren't any other people in the bar dressed like us, and we debated the topic for a minute or two. Finally, the manager walked up, and I told him that we wanted our free pitcher, and would be so grateful for it that we might call back to the office and mention it. We got our beer.
I made my phonecall. Actually, I made two - one back the headquarters, and the other to the first recruiting station in the "call tree."
By 3:00 p.m. the headquarters was "Closed For Mandatory Training," as were all of the Recruiting Stations within 75 miles of St. Louis. The manager told me on Monday he'd given away 30 pitchers of beer to the 60 +/- of us that came in. He also figured he sold enough in Tequila shots alone to make up for it ...