I have bagged myself my first ever upgrade using Expert Flyer.

London Gatwick to Dubai (Return) in September.

Cost me an arm and a leg in terms of miles, 156,000 miles return for 2 people using Economy Flex £556 + £71 Upgrade tax per person! (Still 70% cheaper than full cost)

The Emirates call center were more than happy to help!

Thanks for your tips!

What's the Gatwick lounge like? Worth arriving early?