I don't know what your definition of cheap is but depending on the time of year there are plenty of hotel/casinos out there that aren't overly expensive if you're splitting rooms.
One thing though, if you go to a club with a pack of like 6 guys and you aren't getting bottle service you will wait in line for 1-2 hours, pay cover, and then have to fight through a huge crowd to pay like $15 a drink. Maybe your boys won't care because they haven't been to Vegas and everything will be new but that's the reality of the situation so keep that in mind.