Where Happiness is Built In If you think a family vacation means compromising between the kids’ needs and the parents’ desire for relaxation, think again. The best cruise lines for families have perfected the art of delivering a vacation where everyone—from toddlers to teens to grandparents—finds their version of fun. Forget juggling schedules; family friendly cruises are about massive water parks, dedicated age-specific clubs, flexible dining, and the kind of entertainment t