The 10 hours of rest can include airport to hotel and back to the airport travel, just has to provide 8 hours for sleep.
So you are one of the lucky ones who can push the sleep button and hey presto the Z's are spewing out and you are in the land of nod until alarm time. Oh, and don't for get the time to change out of uniform, have a meal, relax and then go to bed, before waking up, showering, having a meal and then showing up for work. 10hrs at the place of rest does NOT = 8 hrs sleep. Dream on.