First time flying first class? Avoid being the most annoying person in a premium cabin with these 4 etiquette tips

First class is about indulgence, and business class is about sleeping and working comfortably, flight expert Gilbert Ott says. Christian Charisius/picture alliance via Getty Images "When you wake up, and someone is looking over your space, it's odd," Gilbert Ott says. Ott is a seasoned first-class flyer who shared a few tips on etiquette in upgraded cabins. Here's what you should know before setting foot on your first business- or first-class flight. When you board your inaugural first-class…