Host
u have to call the administrator and that person will tell u
A classic name for a birthday person is "Birthday Boy" , or "Birthday Girl".
Hy
You call them your(or a) contemporary.
party animal
quinceanera
you call there manger
You could call them a party animal. The life and soul of the party opposed to a party pooper.
Party Pooper
You could call them a party animal. The life and soul of the party opposed to a party pooper.
The Host
How about a "celebration of life" party, unless the party is held around her birthday in which case "birthday party" is quite suitable.