R omAN cE ship, soaking in the Caribbean sun or marveling at the icy beauty of Alaska's Glacier Bay. "It's a really good value," said Lynn Sands Herron, manager of the cruise department for Bee Kalt Travel in Royal Oak. "The major expenses are paid for in advance, and you can easily budget the additional costs you may incur." While the cost of cruising varies depend- ing on the season (there are peak and non-peak cruise times which differ from line to line), cruises are available for nearly every budget, from the shoestring to the sublime. Carnival Cruise Line offers Caribbean cruises that are very popular with honeymooners. The Norwegian Cruise Line's MIS Southward glides into an exotic port of call. Passengers relax on the pool deck of MIS Seaward, of the Norwegian Cruise Line. /