They use Terminal F, which is near the end closest to downtown Miami and the basketball arena. The luggage/drop off area is a mess, and you just have to find someone to take your bags. You enter and go upstairs, through security, and then down another hall to the check in area. It's like at an airport with the check in stations along the windows on your left and seating areas directly in front. The supervisor's desk is the first window to your left, the
castaway club the next 8 or so, and the regular check in all the remaining windows. We got there about 11 and they were letting everyone in. It was rather crowded, but our cruise was full (CHristmas) so lots of kids, strollers, carry on bags. It isn't anywhere near as big as Port Canaveral.
To board the ship, there is another escalator at the far end of the terminal, and then you walk back along a gangway a level above the check in windows, so everyone can see you boarding (characters are often walking up there too). There is a photo area, then another KTTW check in, then another twisting gangway, and finally you board on to the 4th deck of the Wonder.
Nancy