In 5/6 casinos that I've visited, both in Vegas and in Atlantic City, the poker room is right next to the sports book or sports betting area. Often, this is an easier area to spot because of the many TVs and electronic displays, so look for the sports book and see if poker's next door.
Why is this? It turns out many poker pros young & old like Phil Ivey
, Doyle Brunson
& many more also bet sports, so they make a natural pair.