"Vegas, The Show" is at the "V" Theater (in Planet Hollywood's Miracle Mile). The show is an old school variety show. Think of Bally's Jubilee, but a bit with a more modern look and feel to it. Also, the show focuses more on the actual performers (comedians, musicians, jugglers)
Discount tickets used to always be available at: https://www.halfpriceshows.com/index.html . But I see that they are no longer available. I would think you could still get them at Tix4Tonight, but I am not sure. Perhaps the producer of the show, Saxe Productions, has taken them off the discount market. I can't see this happening as the show was about 1/2 full when I was there.