I've flown quite a bit in my life. Apart from commercial, I flew in helicopters alot in the Marines. I'm one of those people who love flying... fascinated by flight. Except for the time in the Marines when we lost power in an engine in a hover and dropped about 100 feet in less than a second. Or the time when I flew to Japan in an old 747 and watched the wings go up and down to nearly a 90 degree angle over Alaska due to turbulence (some of the Marines on the plane were actually grabbing for their dog-tags).
You'll be fine! You're flying first-class you lucky dog! That will help a lot with anxiety/claustrophobia. Being crammed into those seats in coach for that many hours sucks! When I fly, I'm more worried about people coughing, sneezing, etc. and getting me sick (I'm weird like that).
Congrats on your marriage and it sounds like a great honeymoon! I went to the continent as well on my honeymoon (my post in your other thread) and had a great time. Except for... right as the wheels touched down in Munich, I turned to my new wife and said, "I think I'm getting a sore throat." (see above) Yep, had a terrible cold for 2/3 of the honeymoon!
The stats are with you. You won't crash. You might get a cold, but you won't crash.