I spent most of last week in Amsterdam. Now that’s a cool place. You should visit if you haven’t.
I love flying, but man flying to Europe is an exercise in endurance. It’s a physically draining experience. Luckily (maybe) you can sleep on the flight over because you fly at night. I extra lucked out in that there was no one in the middle seat, so the guy at the window and I had space to stretch, store our crap etc. That was nice and made the flight really tolerable.