Whatever the (see list below) Hatters Have it Covered!
Afterparty
All-nighter
Baby shower
Banquet
Bash
Beanfeast
Blowout
Bridal shower
Celebration
Clambake
Cocktail party
Costume party
Despedida
Dinner
Drinks party
Extravaganza
Fancy dress party
Feast
Festival
Fête
Fiesta
Gala
Garden party
Hen night
Homecoming
House party
Housewarming
Jamboree
Jol
Kitchen tea
Mardi gras
Masquerade
Office party
Parade
Party
Pyjama party
Reception
Rejoicing
Revelry
Roast
Saturnalia
Sendoff
Shindig
Shower
Sleepover
Slumber party
Social
Soiree
Surprise party
Tea party
Theme party
Ticker tape parade