party guest

• visitorShort-term guest
• attendeePerson present at event
• inviteeOne asked to attend
• celebrationFestive event marking occasion
• minglingCasual social interaction

cocktails · hors d'oeuvres · socialite · stranger · plus-one · crasher · reveler · gathering · arrival · greeting · conversation · champagne · dress · mingle · dancing · RSVP · invitation · welcome

• background extraspedestrian, bystander, sports fan, wedding guest, diner
• Visitorsvisitor, guest, houseguest, house guest, invitee
• social talkerschatterbox, gossip, gabber, blabber, prattler
• dinersdiner, diner booth, counter stool, counter seating, booth
• happy peoplehappy camper, smiler, grinner, tickled pink, happy-go-lucky