How few people crewed the Death Star. With 25 levels each 5 metres high. This would be an area about. let's see 120,000 metre diameter Death Star 1. Surface area of the Death star is 4 pi r squared. with 25 levels it is about 1,125,000 sq KM. About the size of Chile, which has about 18 million people and a density of 24 people per sq KM. The Death star crew is 665,000 people. A density of 1.7 sq KM per person. With half being storm troopers gathering in groups of 100's if not 1,000's that leave a huge empty ship. about 2.5 sq KM per person. That still leaves 59,465 metres of linear space for structure and guns and what not on the ship. Could you hide on a Death Star? Easy. It would also tale blood forever to run from a detention block to the ship hanger without using the elevator, which would be locked and monitored when the alarm goes off. Assuming some sense by the planners the detention section is not next to the hanger bay. You might have to run 95 KM. Assume 120 KM winding hall ways etc... How long does it take to run 70 miles?
Let alone a mile long Imperial Star Destroyer, bow to Stern, with hall ways and levels it would take 20-25 minutes to walk it. Elevator could increase that speed assuming they could go in any direction. Still Bridge to Launch bay would be a long walk. Multi direction elevator ride if it doesn't stop at each floor, could make it acceptable. Like walking around a cruise ship.
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