Paul Foreman
Don't forget that dependant on your fare code - stopovers of over 8 hrs can sometimes include a complimentary hotel (transit accommodation), which is 5* for J pax. There's a good wiki within this forum on it with answers to a lot of questions. But much better if you're eligible than the 'quiet rooms' in the Al M, so please do check it out!
http://www.flyertalk.com/forum/qatar...pc-policy.html
Hope this helps!