I've been through this airport about 9-ish times...they have slot machines so that makes for a great way to pass time, although I've been advised to stay away from the airport slot machines.
The last time I went through this place was yesterday...and by far the best experience in all my times traveling through this place. In the past the security lines have been far too long and the hold up due to a 90 year old tsa checking IDs.
If you forgot a souvenir or two, there are plenty of stores to pick something up and you won't be paying double. I picked up a shirt at a store for myself during one of my trips because I couldn't find anything I liked on the strip. They also have an Ethel M chocolate store so be sure to pick up some of Nevada's finest chocolate on your way home. It truly is the best!