My spouse has raging GAD. The last aircraft we got on together was a 4.5hr flight from YYZ to the Dominican, which entailed valium and clonazapam. I have no issues flying - I'm medium height, slim build and can fall asleep anywhere. Her on the other hand, could not relax even with the meds and could not read due to visual dilation (focus on page, ears and eyes disagree about motion, barf). Being able to drop a full dose of the clonazapam or even go for a full on sleeping tablet for 5 hours, she'd be all over this. And I rather suspect that the middle child would (not being able to sit still for more than 25 to 30 minutes) also benefit from this space, again with the taking a nap instead of vibrating in place and loosing their shit.