I'm not clear on it, but I think Eridan is planning it with help from Cheria? [ Or just...thinks he is...? Look she really didn't ask for details there was a party and she accepted that invite like no tomorrow. ] He's training Jake, apparently! Either way I'm pretty sure other people are helping out now.

[ Like Jane, who is making cake.

...Yeah, Aradia didn't even really react to the insult to Eridan. ]