3. Review must be posted in any gambling subreddit with a link to the casino.
I'm not sure how feasible this is. The moderators of any slightly more serious sub with a larger number of subscribers will not allow comments with links, especially when it comes to casino links.
I'm curious to see how this campaign will go.
This is very correct. I moderate a forum and know that there's no way anyone of those subreddits would allow that unless those that have very few members. Even that is debatable. Let's see if any of the participants would make a headway with this.