I don't know how long the extraction process will take per person, but the experience of being the last one out would be unimaginable.
I read in a BBC article that it'll take around an hour per person
Channel 4 news in the UK said 20-40 minutes per person, with the capsule having 90 minutes worth of oxygen in it.
They showed the capsule - it wouldn't be a place I'd want to spend 40 minutes of my life. (Although, obviously, it's better than the alternative.)
I hope they've all sold their stories and exclusive coming-up pictures for what they're actually worth. The footage of the first one up is going to be on every news show around the world.