Robbie walks into the Portland, ME sales center at 5:30 AM and he’s whistling a cheery tune. Typically, brand new dads are a little groggier and on their second cup of coffee this early in the morning but not Robbie. It should come as no surprise that he's earned the nickname “Happy." Robbie has been working at Coke Northeast for 20 years as both a merchandiser and a driver. “It’s pretty much ...