They have small smoking areas but the gambling floors are all non-smoking. In Vancouver (Canada, where we have spent significant amounts of time in the last few years) there are plenty of successful casinos, filled with people (many of them hard-core regular gamblers), and they are all non-smoking. Let’s dispel a myth immediately: casinos do NOT need to allow smoking to be successful. If you don’t smoke and don’t like secondary smoking you’ll probably try to gamble in smoke-free casinos.