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NO PURCHASE NECESSARY
The load-bearing sentence, in capitals, at the top.
This is not boilerplate and it is not modesty. It is the sentence that keeps the promotion from being an illegal lottery.
A prize promotion becomes a lottery when it has all three of prize, chance and consideration — consideration being something of value you give up to take part. Remove it and you have a sweepstakes, which anybody may run. Leave it in and you have something only a state government may operate.
So when you see those three words, they are telling you the structure of the entire thing. If the promotion also sells something with a game piece attached, the capitals are doing double duty: they are promising that somewhere below, there is a free route to the same prizes.