With cruise season here, many folks who love that mode of travel will be taking to the season mega-ships that resemble floating ‘round-the-clock buffets and offer shore excursions too brief to provide a real sense of the destination. Others will opt for vessels and itineraries which provide very different experiences. They include Civil War buffs Tom and Elaine Preston, who take to shore to wander through reconstructed forts and trenches where one of the most important battles of that conflict was fought. Betsy and Andy Cross follow a machete-wielding guide as he clears a path through a dense rainforest that covers an area the size of India. Fun, rather than tropical foliage, attracts Lauren Davis and Jim Goodman to a Go-Kart race track, a ropes course and an exhilarating water slide.