What I like to know is what their current players like. IE if the casino earns a large share of their money from slots, which ones in particular are working? For a poker room, do their players put a massive amount of money in SNGs, as opposed to cash games? stuff like that
In my promotions/reviews I like to write “Players have told us they particularly like X games at this casino”, or “This sportsbook is best known for their attention to soccer fans” etc.. that way if you’re a soccer fan you feel “damn ok I should play there too”.