[KenWittlief]

Just to make sure everyone understands (Im not a lawyer but Im pretty sure Im right on this)

if someone gave you the bottle, or you purchased it from a machine, it is yours - and regarding the prize possesion is 100% of the law (providing you did not beat someone senseless then pry it from their fingers).

So legally the prize would be yours, to do with as you see fit (same as if you purchased the bottle yourself from a supermarket).

Ethically.... thats another issue