“Then again, there may be some people who want to legitimately rate the casino but just don’t care to leave a review.”
If they can’t be bothered to spend thirty seconds, I wouldn’t care about such people’s opinions.
Ratings are too easily spammable. I would never have them, except after a review that met some criteria, like a certain number of words.
It’s a natural human impulse to tell people about something you like. If you have a casino getting 9’s and tens, but no reviews, it will make your ratings look like a joke, just something people with the casinos came and spammed.