Complimentary airport shuttles to/from hotels and offsite parking lots are great. They save us money on taxis or rideshares such as Uber and Lyft (although credit cards that give us monthly or annual credits can help offset their costs). But should we be inclined to tip shuttle drivers — especially because the rides are free? I say no. And here’s a kicker: I worked for three years driving a hotel’s complimentary airport shuttle! Our Tipping Culture Tipping is a topic several of my fellow Boarding Area bloggers have discussed. Tip jars are practically everywhere. Pick up your dry cleaning? Oh, leave a tip. Pump your own gas but head into the gas station snack shack? Tip, please! (Tipping in America has some fairly dubious history, actually.) As someone who worked cruddy, minimum wage jobs in high school and college, tips were vital to my income. My sister was a server…