When your main objective is to be square to the shooter, that angle is the same no matter the sheet size. Only the distance of the shooter you're squaring to is changed, so if they're further out, as a goaltender you stay more to the outer area of the crease to shrink what they can see of the net. That fundamental doesn't change as the ice size changes.
Those distances are harder on the shooter than they are on the goaltender. The closer in players get, you get back to normal NHL distances for shooters... and they're the more dangerous shots, which the NA ice will just see more frequently.
There are differences yes, but minor and easier for a goaltender to adjust for than a skater.