The caspian - when do I leave (lose travel freedom and potential unlocks/items)

[David Davidson]

I'm on "getting the water" currently and this brings me further north, rather than east as I would have expected. I've checked a few guides and know there are a few items to the east as well as a few things which can boost karma. I'm going for a high karma run.
Should I go north and get the water, or should I explore the area to the east first?
I spoke to Anna in her hideout and she highlighted a few places for me as well as a potential side objective freeing slaves and am not sure whether I should explore the east, or whether I get the option to do this after.

I've already taken care of (KOed) the sniper, but not gone further east.

[Bassdeff]

The fuel mission is the point of no return.

[David Davidson]

Originally posted by Bassdeff:

The fuel mission is the point of no return.

So I should use this opportunity (getting water) to go to the east of the map and gain karma and get any upgrades then?
Or can I free the boat slaves and do everything to the east of the sniper tower during the fuel mission??

[Bassdeff]

Do what you need to do before you meet up with Guil and Damir for the fuel mission.

[Jig McGalliger]

You're free to do all the side stuff until the Fuel mission. You can free slaves at the prison boat to the East and one on the water mission. Get the picture for Guil and the canteen to the kid. There's a few others, but these are the main ones.