hi, new to forum and never been to oz before. will be the longest flight i have done and travelling on my own. can anyone recommend decent seats. can i pre book the seats? or do they get allocated when i arrive at airport.? last time i did long flight was 12 yrs ago to usa with my husband! manchester to dubai , then dubai to brisbane. flight leaves manchester 20.10 - not for 4 weeks tho, then dubai to brisbane. thanks ps - flying economy.