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Join Date: Jul 2002
Location: MCI
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Posts: 52,595
My hunch is that it's because they always hope they will be able to avoid the walk situation through natural no-shows. They're hesitant to "pre-walk" 10-15 people and later find out that they could have gotten away with only walking 5 people.
It seems like statistical models should be able to help them out though... That's how the airlines predict their ability to oversell quite often and VDB somewhat rarely.