For me, I think the reason I didn't mind the trek to the Metro Lot, and find the trek to CG is a bit more annoying is the width of the pathway. Heading to the Metro lot, the path was basically fairly wide all the way there, easing any crowded feelings. Plus at least there were some scareactors to break it up.
The path of CG is considerably more claustrophobic , and that bit where the mob of people have to abruptly merge into a narrow sidewalk with a railing is especially brutal first thing. Every time I did it, so many people get stepped on and kicked in the trample. And other than video screens, there's nothing to look at or experience (aside from a nice city view at the merge point).