I took a long-haul flight from O'Hare to Colombo (via Doha) a few hours after running the Chicago Marathon - so I was tired and cranky but high on endorphins.
Check-in at O'Hare was a breeze but the Lounge was TINY! Some people have no seats as it was a shared lounge (Air France, Qatar, Emirates, etc).
Business class was full but really comfortable. Was seated next to the pilot who flew the plane coming into Chicago. I slept through most of the flight. Ordered at least 3 meals in between - being able to have meals anytime during the flight is really cool! I had really good pancakes for breakfast :-D
Doha to Colombo was super fun! I was the only passenger my section of the business class (two other passengers were in another section). Service galore!