Re: PREP.
Eliot will mostly just chase Quentin out of the kitchen and ban him from helping. It's his birthday dinner. It's not really a surprise, but also, it's his birthday dinner.
Fandral is going to learn a whole new side of Eliot. Margo likely took control of planning her own party to avoid Diva Eliot, or Deliot. If everything isn't perfect, Eliot will have to move into the woods and herd goats or something, never to be seen again.