If you see the boat, getting ready to start boarding, or with people still getting on, then head there. Then, get off at the S/D and walk over to Kouzzina. It should take about 20 mins total.
BUT..if the boat is just leaving, or you don't see one heading into the dock??? Just walk. The wait can be 20+ mins, depending on where along the route the boat is. At less busy times of the day, the boats run a bit less frequently. So, if it is just leaving, you could be standing there for 20 mins or so, then get on the boat, then wait for it to leave, then the 15 mins to the S/D, then walk over to BW.
If you do end up walking....cut through the pool area (the main area with the clown slide!!. Just walk through, to the underpass area. When you come out, you will be at the Village Green. Head left to the boardwalk itself, and go right. Kouzzina will be right there, on the right, just before The Bakery.