According to my notes from last Jan: after going through the Port Entry Gate, we headed to Berth 19, drove to Terminal 19, dropped off our roller bags, and parked in the Terminal 19 parking garage, Area 2F, near Stair 6 for a 1 week cruise - $15 / day. Car was still there when we returned !
We're starting a week cruise Saturday, probably park in same general area, depending on where the ship is docked.