I am trying to get my trip together and wanted to stop by the Stratosphere one night next week. I am a little confused about a couple of things: 1. Do I need to buy a pass to go to the observation tower? 2. I found this which looks legit and decent price for two tickets if I need them? http://www.bestofvegas.com/Attractions/stratosphere-hotel-and-casino-attractions/ 3. I read another post on a site that says just to go to the Level 107 Lounge and have a drink or two and that would be good enough. Thoughts? Thanks!!!