Signature campaign is actually a promotion casinos make in other to create awareness for their services to the gambling community, and as such, some may choose to make payment directly into their casino account, simply because they just want it's participants get use to it, and likewise other casinos that may choose to sent payment directly to the participants Bitcoin wallet, but thou encourages it's participants to gamble on the casino they are promoting. So when it comes to the question if does depositing payment on a casino make a user gamble? Then literally, it is a personal decision, but of course, its still it wouldn't be bad if the gambler can spare a fraction of his payment to gamble, while testing the casino features.