<p>Disney Cruise Line has announced plans to do something at its private island, Castaway Cay, that it can't do at any other port of call: renovate.</p>
<p>Why? "Castaway Cay continues to be our guests' favorite port of call," says Disney Cruise Line spokesman Jason Lasecki. "The enhancements will provide new and repeat guests with more water-based family fun, plus a slice of beachside luxury."</p>
<p>In addition, infrastructure changes are needed to accommodate the line's new (and much larger) 2,100-passenger ships, Disney Dream and Disney Fantasy, the first of which is expected to launch in early 2011.</p>
<p>Renovations are under way and scheduled to be complete in time for Disney Wonder's 2010 summer season of alternating four- and five-night cruises. The five-night cruises will include two stops at Castaway Cay.</p>
<p>Here what cruisers will find.</p>
<p>Three new ways to enjoy the water: One floating water park and two freshwater splash parks will be added to the island. Thrill-seekers will be able to slide into the lagoon from two massive slides, shoot water cannons and get soaked by a giant tipping bucket on Pelican Plunge, a 2,400-square-foot floating platform of a water park that will be within swimming distance of the shore.</p>
<p>Children spending the day at the supervised youth area known as Scuttle's Cove will be able to stay cool at a new themed play area with pop jets and geysers.</p>
<p>The third splash park is one that families can enjoy a together. Spring-a-Leak is being built to look like a storm-ravaged beach house, complete with dripping pipes, leaky faucets and leftover pieces of a corrugated steel roof. Chairs will surround the park, providing parents a water-play option that's easier to supervise than a swim in the bay.</p>
<p>The best part: Unlike some other private-island water parks, admission to these three is free.</p>
<p>At home on the beach: Twenty mini-Bahamian-house cabanas are being constructed, four at adults-only Serenity Bay beach and 16 at the Family Beach. Each will have a large front deck with views across the bay, a slice of beach to call one's own, cushy lounge chairs, a refrigerator, storage unit and outdoor shower. Each cabana has its own flagpole. Raise the flag to alert a bartender when its time for a drink.</p>
<p>Cabana rental rates have not been set, but Disney officials say a variety of packages will be offered.</p>
<p>Making room for more: The horseshoe- shaped Family Beach will be extended by more than 700 feet, a 70 percent increase, to serve an increase in passenger capacity of about 40 percent. Disney Imagineers are adding a second lunch-buffet restaurant, new beach bar, additional tram stop and a second rental shack, so that everything is accessible from either side of the beach.</p>
<p>Unchanged: Open-air massage cabanas at adults-only Serenity Bay, bike paths and the ghost ship Flying Dutchman from Pirates of the Caribbean: Dead Man's Chest.</p>
<p>Christine Koubek is a freelance writer in Maryland.</p>