JACKSON, Mich. — A Jackson, Michigan, couple decided to go to Cancun for a spring break trip. But instead of being greeted by sunshine and palm trees as they walked off the plane, they were greeted by law enforcement waiting with handcuffs. This would be just the start of the next "21 days of torture" in a maximum-security Mexican prison, their daughter says. It all started because Christy and Paul Akeo, a middle-class pair of grandparents, had a yearslong membership with Palace Resorts. It's a company based in Florida that owns a number of resorts and time-shares in Mexico. But...