So I got the Loot-A-Palooza key from completing the raid, and had no idea what to do with it. I asked my friend and he looked up a video, apparently I was supposed to get a Dance Party Key then a chest that dropped a guaranteed Legendary/Exotic. I started doing the public event within the Tower, and got my Dance Party Key... But then when I got the second chest after starting the second event I just got 250 Glimmer. Don't know if the video was wrong about getting a guaranteed Exotic, or if this is a bug. Would appeciate a response from Bungie on the matter.