Whenever you get to the port and get a bit of time to roam around, you're going to want to make sure you carry your ship's contact details with you. That's because it can be easy to just get carried away while drinking on the beach or in a local bar and lose track of time. And even if you're not drinking, being in a new place always seems to make time go by faster.
So, be safe and keep your ship's contact details written down and hidden away in your pocket or another safe location in case you need to call back.