Which airline are you using? I'm out there in July and will be doing basically the same journey back with Emirates 5 August (flying back to Manchester, but pretty much the same flight time). I'm flying business class but thats for comfort and I won't be able to do any dilating on the plane (whilst the new A380 Business class cabins are more private, they're not THAT private) so I can let you know what, if anything, I find at Dubai airport. Unfortunately I only have a short stopover of like 90 minutes so it'll be tight but I'm happy to let you know how I get on
It looks like Dubai airport has "Snooze cubes" in the airport - little private rooms, at $21pp, minimum 2 hours?
Em x