At one time I foolishly thought one of the things I was paying for in domestic F was the privilege of sleeping during a red-eye or night flight. Time and again, CO's (and other domestic carriers') FAs have disabused me of this idea. But I know a quiet night's sleep on an airplane is possible--my SQ Biz fight from SFO to SIN proved that. The only noise in that large cabin was snoring. The FAs quietly sat in the galley, whispering to each other, doing their work quietly and/or reading books and magazines.