Party crip 

"A party crip is a crip that just comes around to party, but don't wanna put in no work" - Crip Mac

This a real nifty party, there's no party crips here.

Party crip by YuhBoy_Joe October 31, 2023

partycipate 

To make a meaningful contribution to an event and/or community while having fun.

I partycipate at festivals, because there is always fun to go along with the work.

partycipate by ILoveBuffalo February 28, 2011

partycipant 

One who participates in a social or political party.

Jack is a partycipant in Jill's sweet sixteen party. And he is also a partycipates in the Republican Party's activities.

partycipant by but for April 19, 2018