Joe, if you want to do something kind of different while you are in Vegas, without getting hit over the head with a rolling pin by your new bride, I have a couple of suggestions. I did a guys weekend there a few years ago for my 40th birthday because it was easy for my buddies to fly in from various parts of the country.
First, there is an indoor shooting range where you can shoot several full-auto firearms. (I shot an MP-5 and an Uzi. They also have a .45 Tommy Gun!)
There is also an indoor skydiving facility. Basically it is a huge vertical wind tunnel.