Just got back yesterday...stayed at Bally's and it was good for more of a gambling/drinking/sportsbook trip since it's got good deals on rooms and right in the middle of the strip. If I'm going with my wife, we stay at the Aria for a nicer, more upscale feel. My rooms at Bally's have been pretty nice though, especially for the price, just not as modern as Aria.
And yes there were plenty of cowboys roaming around with the rodeo and George Strait concert.
Also had Hash House for the first time - was very good and yuuuge plate of food.