Thanks. I found a red-eye flight SEA to JFK on 5/11, continuing on to St Maarten the next day (5/12). My return flight is 2 days later and does include a night stay in New York. I found the Wingtips lounge in Terminal 4, which is open 24 hours, which should help. While in St. Maarten I definitely will check out the beach next to the airport as shown in the video. Crazy stuff!
Double MQM miles for the SEA-JFK segments is just too tempting!
I know I can't expect double miles for flights flown after the registration, but purchased earlier, but I'm secretly hoping I'll get them anyway.