I’ve only 1 comment, that is the supposed departure timing where we must reach or risk missing the trip is not accurate. We were late and was the operator was still able to allow us to board the next available boat.
If I can suggest something is the post a picture of the shop of the operator so we know where to go will be v useful. That is especially important for non Korean speaking foreigners. We got lucky cos we met the operator at the dock as he was sending off another group. We followed his instructions to reach his shop.