Exactly, the attraction.
It's not meaningless because the purpose is to take people out of queuelines and out of crowding around the park, and more time spent in the attraction. The actual capacity of the ride can only manage that so much, sometimes it is too small.
More time in the attraction, more guest satisfaction, adds capacity in the whole park too. This is one of the basic concepts of park operations and it's different to throughput. Lots of examples in parks around the world doing this trick.
I know the difference between capacity and throughput.
Its just semantics. Preshows don't really take people out of queue lines, they are in effect just entertaining queue lines. Yes, entertaining people is important, its the whole point of being at a theme park, and so things like preshows and queueline entertainment are important. I'm not arguing against them. But in any measure of running a park the capacity by that measure really is irrelevant and so widely open to interpretation to be meaningless.
Were people watching the first queueline video in CATCF queueing or in a preshow?
Are those before the turnstile of hex queuing or in a preshow? Maybe those after the turnstile but before the video? Or those in the other rooms before the ride?
Are people playing the Spinball queueline games part of the attraction capacity, or are they simply im the queue?
Is DBGT all one big preshow with no actual point?
The second queue after a preshow before a ride, are the people there queuing or part of your attraction capacity?
There are only two aspects of capacity that matter to the running of a park; the capacity of the lowest point which will always be the physical ride (unless there has been a serious design flaw) as along with dispatch time that will determine throughput, and the capacity of people the ride can hold from queue entrance to exit as this will contribute to the overall capacity of the park.
To bring it on topic, GG will satisfy none of these things.