TravelFor most cruise passengers, the mandatory lifeboat drill is about as welcome as a case of sea sickness. The captain sounds the muster signal on that big honkin’ boat horn (seven short beeps, then one long), you head back to your cabin, pick up your life vest, and then join that endless stream of grumbling-yet-gaily-attired passengers, stumbling through narrow corridors and down stairways to your designated station. It’s time consuming, it’s boring, and you have to watch out not to …