This is why proper allocation or budget in terms of market should really be put up in huge consideration and 1 week try out would really be just typically a wasting of time and money.
Good marketing is also needed aside from having a huge budget. This forum is just a small part of the internet and only few people will found out their website if they begin their promotion here. They should promote it first on a platform where they could reach a lot of users like facebook or twitter. Once their website gain enough attraction and they have enough funds, conducting a signature campaign here for some weeks could help to attract some high-roller on their platform.
A casino needs to make multiple-thousand-dollar investments in a signature campaign before they can expect to generate even a few thousand views in the first week. And even then, there's no guarantee that this will result in any players besides those already playing at that casino.
So, here's my suggestion for Signature Campaigns. Stick with it for 1-2 months. It is a slow burn, but surely in those 1-2 months you will see an increase in engagement and traffic. At that point, you can decide if it's worth continuing or not. In the end, building a brand takes time.