Re:'where to eat from NYC to Betheny,Md,
Well, first off, you'd be driving around for some time...because Bethany Beach is in DE, not MD....
But be that as it may, when at the Delaware Beaches I like Grotto's pizza.
Were you looking for suggestions along the way? or once in Bethany? or both? and if you're looking for suggestions along the way....are you taking the Cape May-Lewes ferry (thus down the NJ parkway) or headed down I-95?