Mina and the Days of Tashreeq
Mina is where pilgrims stay on the 8th and, after the rites of the 10th, on the nights of 11 and 12 Dhul Hijjah, with 13 for those who stay on.
Each day
After midday, stone the three Jamarat in order with seven pebbles each. Pray shortened prayers (without combining) and spend the days in dhikr; these are the "days of eating, drinking and remembrance of Allah".
Leaving
Those who hurry leave on the 12th after stoning and before sunset; if sunset reaches you in Mina, most scholars say you stay and stone on the 13th. Staying to the 13th is better (Qur'an 2:203). Leaving requires also performing Tawaf al-Wada.
Camp locations and schedules are set by the official programme; follow your group leader.