I went back to this thread when it's just a week ago when we're discussing about marketing and exposure. Now, you've launched your campaign and that's a good start and having a guarantee of 4 week. But, usually with that short term of run, they won't give that much effect. Maybe there's a little but to have a stable effect on it, just like the other casinos, they're running it for so long. Anyway, you still need to evaluate the effect of it after all and wishing you good luck on it.
There are really many reasons to start here, but it's a good idea to suggest long term expressions in the forum, but don't expect a definite positive effect here because the overall reason is that the site itself doesn't change.