Throughput is key when it comes to ride duration remarks, particularly from the GP. If something is like walk on - 10 mins wait, there isn't a lot of time to anticipate the ride experience.
When you start queuing for 30+ mins, the patience wears thin (GP mainly).
I think this also highlights the importance of a well designed queue line and need for decent theming, story and music, especially when it comes to these big, modern signature coasters.
One of the ugliest sights known to man happens to be a jam packed cattle pen with nothing but walls and/or fences to look at. It's a scientific fact.