Wedding = tonight at around 10PM (EST), in the chatroom weddingofthecentury.
If your chara knows either Simca or Spitfire, then there's a 99.9% chance that they received an invitation to go to said wedding. Get out of the house and have some fun, etcetc.
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If you're planning on going, you probably want/need to know these things listed under hurr. )