For those staying at the Hyatt.
My memory is a bit fuzzy since our last cruise was over a year and a half ago so bear with me!
I remember going into the lobby early in the AM to check in (for transportation) with
DCL. They had a table set up in a room off of the lobby. We waited in line and then got all squared away with them. We were given a Mickey boarding pass & was told they would call "Mickey" when our group was ready to be taken to the DCL bus. From what I saw, depending on when you checked in was what boarding pass you got (ie Mickey, Donald, Minnie, Pluto, etc.)
Sorry, I can't remember the exact times but I know that I was in the lobby early to check in w/ DCL. If I had to guess, probably around 8-8:30ish. I know for a fact we got the very first DCL bus leaving out of MCO Hyatt. We got to the Port early, I'm thinking around 10:00-10:30 ish. I remember there being not alot of people there when we arrived so it must have been right after 10.
It was a very smooth process with DCL. VERY organized. I know for that particular cruise, there were TONS of people at MCO Hyatt for the DCL cruise and the whole process was easy & flawless. That's why Chris and I decided to stay at the Hyatt again this time. When I checked into the Hyatt, I told the lady we were cruising DCL and she gave us an information sheet with everything we needed to know regarding the next morning (Times, what to expect, where to put luggage, where to meet, etc.)
Hope this helps. This is what we did last time and I'm thinking that process hasn't changed too much since then.