This is what I "gleaned" from the boards...if you are like Rose,
PLATINUM (trumpets sound, confetti falls, red carpet rolled out so you don't have to walk on the same ground as the commoners, You get to enter whenever you want to...they'll even fly you out on a luxury helicopter to meet the ship. You get a 12 course welcome aboard brunch at Palo, complete with cheese tray and mickey bars you don't have to pay for. They also get first dibs on sticking their feet in the adult pool/bathtub.
If you're stowage (like Jack) once they begin pulling in the ramp, you have 10 minutes to scramble up the side of the ship on rope ladders before they push off. You'll then be treated to a buffet dinner of mickey waffles and pancakes while some slick used car salesman pressure you to buy expensive-overpriced "art". This will be held where the walking track goes through the front of the ship (the place you can see the anchor chains). The cast members waving you off give you a big one-finger mickey salute instead of a wave.
As for the rest of us, the time you can enter your room is chosen by lottery, based on how many
DCL vs RCCL discussions you've participated in since the inception of DCL. If you were pro DCL, you'll be able to enter your room before the RCCL demonic cult members. You also get to choose what item you'll use to "claim" your chair on CC...towel or copy of O Magazine, even if you're not leaving the boat.
PS:
PLATINUM (da, da, dada...)
patrons can bump you out of your room the night of the fireworks so they can watch them from your (theirs now) balcony. This also applies to parking at CC. They can also choose if smoking is allowed on all verandah on their side of their ship.
You will have to decide if you'll come in a day early, then decide where to stay, they how to get to the boat from where you're staying...wish there was somewhere you could get answers to questions such as these...oh well
again...I can't personally account for any of the above...just relaying what I heard from the guy delivering j-b weld and bondo to the guy fixing the hole in the back of the Dream from when it SLAMMED into the other ship at PC the other day.