Can you get to the south island early in Far Cry 3
If you're playing on the PC, try the Schwartz Mod Compilation.
Some of its features that may be of interest to you:
- All weapons unlocked at start but you have to pay for them (note: towers will still give pop-ups saying you unlocked free weapons but you haven't)
- Wingsuit unlocked at start
- 2nd island unlocked at start
No. Technically it's a matter of short swim from lighthouse ruin on north island, but the game won't let you do that until you get the "wingsuit" story mission in 2/3 of the game.