You can see between Europe and Abu Dhabi is amazingly cheap, 10,000 miles one way in Economy, 20,000 miles return. This is used on KLM services only.
KLM is also using their flagship Boeing 787 between Abu Dhabi and Amsterdam!
The only drawback with Flying Blue's promo award is you can't change your ticket, it is non-refundable (miles and tax) and non-changeable. You use it or lose it. So I'd only book it knowing for sure I need that trip.
Don't have Flying Blue Miles?
There are many ways to earn Flying Blue Miles:
Buy Flying Blue Miles from Flying Blue direct.
Transfer your credit card miles into Flying Blue. I use my Citi Prestige credit card which allows me to transfer miles to 11 Airlines.
Transfer Hotel points to Flying Blue such as Starwood SPG points.
Let me know if you have any questions and what other deal you'd like to see me post?