First time flying first class? Here are etiquette tips to avoid being the most annoying person in a premium cabin

• First-time flight upgraders should be aware of business- and first-class etiquette.
• A flight expert shared his top tips for blending in with passengers who often book premium cabins.
• He said not to ask whether everything is free in first class or expect too much in business class.

When you’re flying first class, etiquette is key for blending in with the opulent crowd — especially if you’ve never been in a premium cabin before. The same goes for business class.

Travelers in first and business class may be spoiled with welcome gifts, multicourse meals, and private seats for lounging. While tickets aren’t cheap, credit card and airline rewards programs have made the luxurious cabins accessible for people accumulating points and miles.

If you’re upgrading a flight for the first time, Gilbert Ott, who flies an estimated 200,000 miles a year, has a few tips for those who want to blend in with the first- and business-class crowds and avoid annoying more seasoned premium passengers.