The Boston Globe reports that Apple’s Cambridgeside retail store in Massachusetts was plenty busy during the state’s sales tax holiday Saturday. Cash register lines were “25 people deep” at peak periods, according to workers. “We had a huge crowd at midnight, and people were buying throughout the night,” said a tired-looking store manager, Michael Regan, who dismissed concerns about his exhaustion. “I wouldn’t miss it — this is too much fun.” Apple’s three retail stores in Massachusetts were open 24 hours (between 12:01 a.m. and 11:59 p.m.) for the tax-free event.