The second upgrade unlocks a fast travel map behind Arthur’s tent. However, this fast travel is only one-way. It can only be used to reach discovered towns, and there is no way to fast travel back to camp. There is a hidden feature the game does not make known. Simply place a way...
It is really amazing and for me it has been hard to go back to a "solo" game, in the sense of a game where you have no home or don't belong to someone, ever since I experienced RDR2. Also if you don't be in the camp for most of the time you miss a lot of stuff, a ...