It’s Tom Cruise’s birthday party, and to celebrate he is inviting (you) his fans to come witness him, live on stage, reprising his iconic role as Maverick in the jet-piloting classic Top Gun.
As a bonus, he also wants to give the attendees a taste of his other most remembered characters/scenes.
It’s his way of saying thanks for the years of support. All he asks, is that you come to the party dressed in 80's attire or as your favorite character he has portrayed.