Very helpful info. Didn't know that there is no window in 15. Well, I'd like the legroom, but for some reason I have a desire for a window on this special trip upstairs.

For maximum leg room I presume it may be advisable to avoid the bulkhead upstairs on the 400. Not a long trip, though.

Using 40k miles for first/business and thought I ought to make three legs of it with a 747 upstairs (breakfast) and a 777 in business (lunch). 777 is the only major airliner that I haven't flown.