Fair notice that this post is by someone whose DW was in the terminal line to sign up DW, 8, for the lab in January, and I could not believe when over an hour later and the line toboard started moving, she wasn't done yet, and finally I got to the front of the line and had to step to the side for 15 more minutes until DW and DS returned and we finally boarded. Then when we swung by the Lab to pick up an age group Navigator, we saw how no one was there and we could have taken the form we got at sign in and just gone to the Club and gotten him registered in 5 minutes with it already filled out.
So to keep that 5 minute time frame the same, I am encouraging everyone to register in the terminal whilst we will slyly wait until we are on board.
In law school we called this technique of misinformation and intentionally creating anxiety in others to our own advantage being a "Cut-throat". Which, considering the Pirate theme and all, is appropriate, right?
So reading between the lines, you may wish to hold off and register on board if the line looks like it might delay your boarding. Or at least that was our experience in january 2005 on the Wonder.