So let me get this straight... at least one of three Grunts travelling together to Asia carry Rhoey in his carry-on baggage on an international flight - (as you do!) - and risks getting pulled over at how many points during security screening, both getting on the flight in Oz and getting off the flight in Asia.
Suppose it's possible, (and accepting that, like most of us, your average Grunt is not a rocket scientist), but I'd have to ask myself what did they think they'd need Rhoey for in Asia? Turning a hooker catatonic after they paid for her services?
Sounds awfully like a young woman who forgot that one drink equals two at a cabin altitude of 8,400' and is trying to assuage her acute embarrassment at the result of overimbibing at altitude.