[FIXED] Weirdly dress NPCs at festivals/night clubs/parties

Here's some feedback on some outstanding issues:

Dance related events and nightclubs - FIXED for Young Adults, they show up in assigned party outfits.

- but Adults will show up in everyday outfits and not party outfits. I don't know if this is by design, because I see them wear party outfits to lounges, but not dance events or nightclubs.

- sims you arrive on the lot with in a group outing will not be wearing party outfits. Sims in your group will show up in their everyday clothes, but your sim will be in party clothes.

GeekCon - NOT FIXED - this is the only festival I've seen that still has issues with NPC clothing - all the other festivals seem fixed, with NPCs in appropriately matching themed outfits.

Some sims will show up to the festival in underpants. I've seen this on both male and female GeekCon situational outfits. This is not one of her assigned everyday outfits.

Miko Ojo was on the lot when the festival spawned in and she span into this long green gown, which doesn't seem like a cosplay or event appropriate. It just seems like she span into something random.

This guy arrived in something completely random. It is not any of his assigned outfits. Other sims visiting the festival do wear appropriate clothing, such as the girl in the purple GeekCon hoodie and the people sitting in the back in cosplay.

I believe this is the issue also affecting @Reitanna in the screenshot posted. It's not the custom nightclub causing sims to show up in random outfits - you can see in the top right of the photo that GeekCon is active - so it's the same thing I'm seeing - people arriving at GeekCon in random non-matching clothing.