when we do boat trips and we do drink a lot as well but have sobered up by the time we get off the boat, well most of us, when disembarking we always have 1 guy on the steps, one on the boat guiding people off, pulling them onto the steeps, maybe its the HSE mode that kicks in for us, most boat only have like 2 crews, so the captain will be trying to steady the boat, while the other crew member will be at the front hooking up to the pier, they dont help or give instructions, getting on or off is at your own risk.