I think one post was confusing etiquette with atmosphere of the ship, where it really is more to do with personal actions.
Behave as you would anywhere else..common courtesy goes a long way!!! I have a book I got as a gift a long, long time ago called "The Essential Little Cruise Book". It is written by a cruise director and gives general cruising tips and does have a section on ship etiquette. I have listed them below...again these are general etiquette tips and I paraphrased some of them. Not everyone will agree with all of them and may feel they don't pertain to
DCL but here they are.
Never go up to the Captain when you see him around the ship and ask "Who's driving the boat"?....he's heard it a thousand times and it gets old quick.
Don't leave your laundry in the machines and not come back for it.
Don't leave your personal belongings on deck chairs to save them for later. They are for everyone and unless you are ready to use them don't leave stuff on them.
Don't walk around the ship in your bathing suit without a cover up and don't walk the halls in your nightie and curlers.
Don't drape towels and clothing on the verandah railing (makes the ship look tacky).
Always be polite when asking for something from the staff. Always smile and make eye contact.
Be modest in your attire, not everyone needs to see every bump and bulge.
Respect crew only areas (the ship is also their home and how would you feel if strangers were pushing their way into your living room).
Don't sit in the first row at the show and doze off....people behind you can be distracted by your bobbing head and the performers won't appreciate people dozing during the show.
Be discreet with your money and personal wealth. Nobody really cares and being ostentatious is in bad taste.
When leaving your cabin don't let the doors slam.
To be asked to dine with the Captain is an honor don't ever turn it down.
There is a reason cruise ships don't sell gum....if you bring your own don't stick it where it does not belong (like on the floor or under furniture). Dispose of it properly.
If coming back from muddy excursion, take off your shoes and carry them to room so you don't track mud through the ship
Don't block the elevators, wait until passengers leave the elevator before boarding.
If you encounter a problem seek out a crew member and discreetly explain the problem. Don't bore your fellow passengers with it.
Keep a grip on yourself, don't over indulge in alcohol and be annoying to others.
If the evening calls for formal attire don't change into shorts and t-shirt mid way through.
Never use your hand to touch food on the buffets, always use the tongs provided (or don't put stuff back if you change your mind).
Take a moment to commend the staff if you feel they have done a great job. A pat on the back goes a long way.
And my favorite:
If the sun shines smile, it is rains...smile and look for the rainbow!
MJ