Thanks all. Thought it was 20.
And thanks Nux for the tip on the AMS-LCY-JFK route. Just what I was looking for!. Flown the BA1/2/3/4 a few times and love that.
And I'm not going just for the football. The racing at Belmont on the Saturday is the main draw, (2 grade 1s with a friend having an entry in one of them), and especially as I am a Seahawks fan!