From new thrills to extraordinary bargains: 16 buzz-worthy cruise happenings

New ships, new destinations, unusual activities and some extraordinary bargains are part of the cruising buzz for summer and fall. New thrill attractions: Thrills have become a cruise ship staple, and on the world's newest, largest ship, Royal Caribbean's 5,500-passenger Harmony of the Seas, the rush comes courtesy of the Ultimate Abyss. Beginning later this month, daring riders can zoom on mats from the top of the ship to the Boardwalk neighborhood about 100 feet below. Posh gets posher: Regent Seven Seas Cruises is billing its 750-passenger Seven Seas Explorer, launching in July, as the "world's most luxurious cruise ship." The top digs are a 3,785-square-foot suite, with a first-at-sea private spa (serviced by the ship's Canyon Ranch SpaClub) and a price tag of 5,000 per person per night, based on double occupancy.