We attached a sign to the drive thru saying if you sang Happy Birthday to the person taking your order, you'll get a free item from the dollar menu. It is amazing what people do for free food....

We attached a sign to the drive thru saying if you sang Happy Birthday to the person taking your order, you'll get a free item from the dollar menu. It is amazing what people do for free food.
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HOW RECORDING WHAT THEY SAID WAS DONE:
-Searching Google, we located the radio frequency of McDonald's radio system. (www.cityfreq.com is a good site to start)
-We had an hand held radio scanner from Radio Shack that had the capabilities to program radio frequencies and programed McDonald's frequency into it.
-Easy as that!