Just like most of the online casino accepting cryptocurrencies, most of them have signature campaigns to help promote their sites all over the forum. I think it would be best for yours to have one and advertise through signature campaign.
I wonder why people still suggesting signature campaign as the best way to advertise a site. Those sites that are running a signature campaign has many other attractive offers through the main site so the campaign can run effectively. If there is no other attractive offers on the site, signature campaign wont work as expected because people will stay on the older sites that has more offers. So I suggest this site to focus on good offers first, once they have good offers such as promotions, contests, etc then they can start to think about signature campaign or other advertising strategies.