Out of my last 25 domestic segments in Y, I had only 1 where I had a row to myself (NW DTW-DCA). Loads are high nowadays and even redeyes are being booked up. Enjoy your F seat and dont even try to downgrade. You never know if a standby will come and be assigned to what you thought was your personal row.

What I normally do before a red-eye is either wake-up really early that morning or simply not sleep the night before. By the time I get on the red-eye I am about ready to pass out. And bring your headphones or earplugs because despite being a red-eye there will be plenty of people talking, chewing gun, reading the paper, laughing, coughing, etc.....