No, you cannot be a Member of all the Camps, but you can solve all the Quests you need for that.
After solving all Quests, you have to make the decision wich Camp you will enter.
But this will be a got point to make a Savegame, and start the other Camps from this Point.
If you are going to solve the Quest with that old Mine, ask before you give the List from Ian to Diego <img src="/ubbthreads/images/graemlins/winkwink.gif" alt="" />
