So far I only like casinos in Las Vegas; they're entertaining. Casinos seem out of place everywhere else. I talked to a semi-pro casino gambler once. In Las Vegas for my job I came back to my hotel's casino after meetings and played the 25-cent slots before meeting for dinner. It was fairly empty and I saw a man looking at all the area slot machines. He would sit at a few and he would quickly win. I noticed this and joked about how lucky he was. He sat at the machine next to me and told me he could tell by some display on specific machines if it was about to "hit". I asked him about it. Non-gamblers like me couldn't see that they were close to getting a win on a progressive machine but he could. He went to various casinos and saw where people had walked away after unknowingly contributing to building a jackpot - then he collected it. Funny thing is after he told me this, I noticed two more people - one man, one woman - like him that week. Going around to machines, sitting down, and getting the money. (I won about $150 total that week after he told me before he left how to find a machine jackpot that was building! I usually just pick a slot machine because the game looks fun or it's next to whomever I'm with.) These aren't the applied math/team gamblers - just eagle-eyed; they knew enough strategy to roam around looking for a low-level win
