Yes, I suspect it would be safe.
Don't know how current this is, but the F meal windows have been
First Class Domestic Meal Windows:
Breakfast: 4 a.m. – 9 a.m.
Lunch: Noon – 1:30 p.m.
Dinner: 5:30 p.m. – 7:30 p.m.
Flights under 2 hrs must depart in or be in air during window.
Last edited by JDiver; Feb 2, 2009 at 9:21 am
Reason: add meal windows