I just want to point out that this isn't necessarily an issue of people not caring about the rules. Sometimes people are driving from far away.
For example, I'm going on my first Royal Caribbean Cruise in February. I live about 2 hours away from the port in New Jersey. If it calls for snow that morning I'm going to get a hotel the night before and will show up around my designated time. However, if it doesn't call for snow and I'm driving from my house I'm still going to leave plenty of time for trouble because I would rather show up an hour early then 5 minutes after the ship leaves.
I understand that this means I might need to wait at the terminal. I'm okay with that. However, if they offer to let me on the ship an hour early, I'm certainly not going to refuse.
I'm hoping for a fast pass! 😂
