My name is Mike Myers. I am the owner of Legion Marketing; my expertise is in nightlife. I believe that I know the best and brightest of everything that's in Las Vegas. I can help you skip the lines, skip the bad spots, basically cut the fat.
Your easiest way to go see the Blue Man Group in Las Vegas is to go to the Venetian where they're actually located. Go to their box office or go hit up your casino host if you've been gambling.
They go five days a week, two shows a day. It's obviously a very popular show ,however, not an impossible show to get tickets for.
You could also go on to the Venetian's website. Purchase tickets through their website itself or go to a ticket broker or Vegas.com, purchase tickets to the show there.
Like I said, it's not that difficult to get it in advance, however, once the tickets are gone they are gone. There typically isn't a way to get tickets once they're actually sold out because it's not like a night club or it's not like a restaurant where they overbook. Once the tickets are gone then they're sold out so then you're relying on a ticket broker where you're paying double the price or triple the price depending on how much you want it.