We had the Club Orange option last March on the Rotterdam embarking from Port Everglades.
Embarkation was quick and organized , as the other people have mentioned look for the Priority signs. The overall experience was very nice , especially the Club Orange dining room.
I found the dedicated line at customer service counter very useful , the tote bag very spiffy.
The consensus of those who have commented is that you get the best value when you have the Club Orange option on a pinnacle class ship as they are the only ships with the Club Orange dining room.