VIP Ad-free “Join”
With a VIP Pass, any “Join” mode game that you are in can be joined ad-free by your friends so long as your status icon is turned on.
Example of an available game with a VIP present
Also, if you’re present when the “Join” game ends, any player who chooses “Play Again” will not see an ad before their next game.
Of course, you don’t see ads for games, either.