When do you arrive at a quinceanera and how would you greet your friend and her parents

¿Cuándo llegas a una quinceañera y cómo saludarías a tu amigo ya sus padres

You go whenever you want most people go at night just when the party gets started but if you want to be there early since the start for your friend i advice to go early even to the church (if she having it) and you meet your friend however a hug shes your friend and her parents i advice a hand shake but if they seem nice i say go in for a hug and a kiss on the cheek (Its not weird at all alot os mexicans so that)