Ye, it should cost an extra 2 AP (instead of current 1) to move over that spot since the water moves faster through that point, so it's more impeding.
question, why does 1 player have access to a 1 space move to the closest font on that map, while the other doesn't? Is it to make up for the 1st player second player discrepancy or something? seems weird to have it on that map of all maps though.
It's 6 spaces from the edge of the Shrine deployment zone to the closest font on both sides, it can be hard to count sometimes.