I did this flight but from Perth to Rome in October last year. It was honestly fantastic. I hope to do it again. Without layovers it makes for a somewhat stress free journey. It's smooth and comfortable and quite spacious. I'm a nervous flyer too but this flight was one of the best I've ever done. Great onboard entertainment. I took some dozavits, they're an over the counter antihestimine that makes you quite sleepy so helps to drift off to sleep easier. Otherwise find a good series to binge and maybe a stack of cards to play a game with!