Well, it's our first time flying in anything other than economy and also our first trip overseas/first long haul flight. I had my heart set on a lie-flat seat so I can sleep on the way over, and I think we have enough Skymiles to swing the upgrade both ways, which I'm thrilled about! I'm anxiously waiting to hear back from the travel company to confirm our miles will cover the upgrade. I welcome any other advice on seating choice, surviving long-haul flights, etc. I read that Delta might send out an email 3 days in advance allowing us to pre-select our meals, which would be nice.