Will I get access to special upgrades of the attractions with the Vegas Attraction Pass?
No. Your pass is only for general admission for the attraction. Some attractions have upgrades like the Mob Museum, which offers access to the speak-easy as an upgrade, or the High Roller has a Happy Hour upgrade where you can be served drinks during your ride, or Pole Position can be upgraded to more than two races, etc. These upgrades are not covered by your pass. Most attractions will allow you to upgrade at their location should you choose to.