A flight attendant says passengers are more likely to receive free alcoholic drinks on shorter flights due to limited service time. Creative drink requests and “secret menu” hacks can enhance the experience, but timing and awareness of available ingredients are key. Small gestures like tipping or showing kindness can improve service and even increase the chances of complimentary perks. As some major airlines continue to ruffle feathers by removing long-standing perks and privileges, one on-board amenity has thankfully remained a constant: a complimentary beverage.  Though refreshments are often no-frills and usually limited to soda, tea, juice, or coffee, it’s still something to look forward to, especially on longer flights when cabin-induced dryness can have passengers feeling as if they’re traveling by camel through a never-ending desert.  That said, many frequent fliers have found ways to give their beverage a boost and even score free booze in economy seats. Interested in learning how?…