Open to anyone
Raven loved a good party. He wasn't exactly the world's most social bird, and some had very definitely opinions of him, but when there was music playing, people hanging out, and the opportunity to mess with some people in a friendly manner Raven couldn't resist the chance. Besides, Marijuana seemed like a nice guy, and there was the promise of peyote if things got boring.
Wandering around, Raven was enjoying the music and the scene. He hoped at some point he got a chance to talk to the birthday boy, and offer his thanks for the invite, but anything could happen.