I've never sailed on
DCL- we are booked in a 1bedroom suite on the magic in October, though. IMO, we got a fantastic deal that we couldn't pass up. We booked the room based on space and nothing else, really. Although, my DH and I have cruised on two other lines (
RCCL, and princess). On RCCL, it was our honeymoon, and we had the absolute worst stateroom host! We didnt get the invite to the Honeymooner's reception, until after it had taken place, and never even got soap replenished until we actually had to ask for it because we had run out! We were first time cruisers and didn't know how things were supposed to go.
The following year we chose Princess and our faith in cruising was restored. Unfortunately, moving and starting our family stopped us from cruising for a while, but we are excited for our first DCL cruise since we are big Disney family. It helped living 2 hours from WDW for 28 years

we have 6 yr old twin girls so I'm thinking they'll be in heaven the entire time. I'm really hoping we get the 'magical' experience a lot of DIS'ers talk about!
Okay, so anyway, to answer the original question, we haven't sailed yet, but so far things I've 'gotten' through booking concierge, are that after online check in, I wasn't given a time, I was just advised that we could arrive anytime after the port opens. Nice perk, especially since we booked less than 2 months from sail date and I'm sure people have been 'checked in' for a while already. And a few days ago, I got a phone call from the concierge line, welcoming me to DCL, and asking if there was anything at all they could assist me with, such as reservations, shore excursions or just to answer any questions I might have. It was very nice and it definitely felt like I was getting something 'extra'.