The policy and TOS of casinos can change at any time which if you write something good today and the TOS is changed after just a few days, your review might just be the reason for someone who got into the mess. You must be very updated on what changes have been made to the casinos that you have reviewed.
Not trying to discourage you with this but that's just my suggestion. There are easy ways to do this nowadays and blogs were made outdated. It's called Vlog. You can do it on youtube and gain followers and you can still monetize.
Such blogs might need to be updated and they might necessarily need to be automated in the event of the casino's updated terms but I currently don't think there is a possibility of updating the TOS just about when they do as most of the articles might be weeks or even months old.
OP just has to factor in all of these when coming up with his project.