We will spend the night at the airport Hilton. The plan for tomorrow am is to visit the arboretum. Icelandair flights from the US to Iceland used to only be at night. Even if you were in business class, it was pretty uncomfortable as their business class seats are the same as regular domestic first class on American. Now they have added afternoon flights from bostonand JFK, so it is much better. You arrive at about midnight, but this time of year, it will still be light. And with the time difference, I won't be ready for bed yet.
I don't know how much posting I will be able to do once onboard and north of Reykjavik. From previous experience, I know that the satellite Internet connections are pretty iffy once you get that far north. But I will give it a go. We do have a nice onboard credit at can e used, if I can get online.
I have never packed so much stuff for a trip--multiple pairs of gloves, fleece, long underwear, rainwear, boots. But we were under the weight limit, so ok.