I think boarding starts at noon. You should get more info nearer the sailing date.
I think you are going on Navigator as you have posted elsewhere - in reality you will probably be allowed on the ship as soon as she is ready - around 12.30 - so I would aim to get there earlier. You will have to be on board by 4pm latest if she is sailing at 5pm. If you have printed off your SetSail Pass from the internet then you will be straight on board.
What ship are you asking about? From which port are you sailing.
I would suggest that you try to arrive even earlier than you plan and certainly no later just in case you get delayed. Ships normally start boarding at about midday and even though you have done your online documentation there are still other formalities to go through so it does take more time than you would think. Bon Voyage....Falen Dow.
Can only speak for Princess but I expect they're all the same and you can go on board from around 12 noon I think ...we have been in our cabin at 12.15 and ready to go to lunch!!! and we weren't the first to go aboard.
You can Normally board from noon.Your baggage will be taken, but your cabin may not be ready yet. get to know your way around ship, relax and enjoy a meal or a drink. Cheers.
We are on the same cruise and aim to get on board at around 1-2pm. May as well get the most from the holiday. You've posted more entries than us and we've cruised before. Hope u enjoy it as much as we intend to.