Well you wont make it if you spend your time worrying about a trivial matter like that. I would worry about about the 3 panel interview on day 2 where they will rip you to pieces if you dont know what youre talking about. Even when you get down to ADL, you will see some of the cadets smoke so seriously its a non event. In addition off topic, just so you dont end up like our friend chazz! If you dont know what model the 777 on that table is, PLEASE pick up the fu!@ing thing and look at the engines. They say GE90 on them so dont be a dick and say you dont know what it is . Being asked to "identify" the model is a leading question, the woman in question was directing you towards the answer. Regarding the fuel stuff, slightly harsh I think, but you messed up long before it got to the fuel requirements. Pray to god you dont have Will (in his role as evil First Officer) he was particularly pressing....
PS nmcpilot, if you need a fag, on the 24th floor in the visitors lounge, theres a large balcony with smoking area where you can admire the view of the high ground next to Tung Chung and the runways. If you can see anything, gets quite smoggy in HK you know!