NEW YORK (AP) ― Cruise trends as the 2013 season gets under way are shaping up to include a bigger focus on multi-generational groups, more specialty food offerings, and continued efforts to wow passengers with new onboard firsts like an aquapark, a glass walkway and a vertical garden.

Here are some details on what’s new in cruising.

The new ‘It’ ships

CruiseCritic.com editor Carolyn Spencer Brown says two of the hottest new ships debuting in 2013 are the Norwegian Breakaway, which will be the largest ship ever to homeport year-round in New York City beginning in May, and Princess Cruises’ Royal Princess, launching in June.

The Breakaway’s exterior features the unmistakable pop art of Peter Max, with Lady Liberty’s face and a city skyline anchoring the brightly colored design. Onboard the ship offers an open-air 0.4-kilometer boardwalk and an aquapark, including five multi-story water slides and a double freefall slide where the floor drops away. The ship will carry 4,028 guests and will sail weeklong cruises to Bermuda through Oct. 6.

The Royal Princess will carry 3,600 passengers and will feature a jogging track and the SeaWalk, a glass-bottom walkway extending 8.5 meters beyond the edge of the ship and 39 meters above the ocean. One part of the ship, The Sanctuary, is described as a “signature haven just for adults,’’ with private cabanas and steward service for light fare and drinks. Its maiden voyage will begin in Southampton, England, and head for Spain and Portugal, followed by trips to the Mediterranean and Caribbean.

“The important thing about these two ships is what they say about cruising, which used to be you were outside during the day and at night you got dressed up and had dinner and went to the theater,’’ said Spencer Brown. “Both ships reflect the new trend of being outside all the time with outdoor restaurants, more on-deck seating and other reasons for you to be outside.’’

Specialty food

Seems like every cruise line is upscaling and expanding food options. Disney Dream and Disney Fantasy in October began offering a $50 per person Champagne brunch at Remy, Disney Cruise Line’s adult-only restaurant named for the character from the animated film “Ratatouille,’’ with dishes created by the French Michelin-starred chef Arnaud Lallement. The Norwegian Breakaway will have everything from a churrascaria (Brazilian-style steakhouse) to separate bars for Asian noodles, gelato and raw shellfish. On MSC’s forthcoming Preziosa ship, there will be an Eataly Restaurant modeled on the Manhattan Italian gourmet food mall.

Celebrity chef Jacques Pepin has served as Oceania Cruises’ executive culinary director for nine years, and this September, he’ll be a guest on Oceania’s Riviera ship, doing a cooking demonstration, Q&A, and meet-and-greets with guests at his namesake onboard restaurant, Jacques, and the ship’s culinary center.

But there may be a downside to some of the new food offerings. Arnold Boris, editor-in-chief of Cruise Gourmet, said he has found that as specialty food options with extra fees increase, basics that used to be offered for free decrease. “It’s all unbundled now,’’ he said.

Spencer Brown agreed: “The quality of the main dining room has gone downhill while they’ve raised the prices to get into these alternative restaurants.’’

The unbundling trend is seen in other areas as well, with mass market lines keeping fares low but charging extra for various onboard activities. Ironically the opposite is happening on luxury lines, where “they don’t want to lower (ticket) prices because it doesn’t look good, but they’re throwing everything in for free. Luxury is the best value it’s ever been,’’ Spencer Brown said.

Multi-generational trips

Fewer cruise lines are building brand-new ships, but many are doing intensive renovations on existing ships. Some of these renovations involve adding new spaces to accommodate a fast-growing segment: multi-generational groups. Cruises are being marketed as the perfect vacation for grandparents, parents and kids to take together because they can pursue different activities onboard, then have a meal or shore excursion together.

On Norwegian, for example, between 15 and 20 percent of guests on any cruise are part of a multi-generational group, according to spokeswoman Vanessa Lane. “Families are the second-largest cruising segment, only behind the 55-plus age group,’’ she said.

More than half of Carnival bookings involve more than one state room, no doubt many booked by family groups.

Even luxury lines, which tend to attract an older crowd than mass-market ships, are seeing more children. Crystal Cruises saw family groups increase 30 percent in 2012 over 2011, said spokeswoman Mimi Weisband. “Our youngest world cruiser is 2,” she added.

To accommodate the diverse needs of old and young, ships are expanding areas for youth activities while at the same time creating more adult-only pools and quiet areas where passengers can nap, sun, or read a book. Carnival ships have “Serenity Spaces.’’ Norwegian ships offer exclusive suite areas with key-card access and private courtyards called The Haven; they’re not adult-only but they are designed to be quieter than other parts of the ship.

Online booking

The cruise industry has long recommended that consumers use travel agents to navigate their options: which cruise line, which ship, type of room, itinerary. But an increasing number of travelers are abandoning the middleman and booking directly with the cruise line of their choice, either by calling or through the cruise company’s branded website.

Meanwhile the cruise industry is making new efforts to reach travelers using social media. A new YouTube channel, Cruise Industry TV, launched this month at http://www.youtube.com/cruiseindustrytv. Also new is CruiseForward, a website with a Facebook page, for showcasing stories from the cruise industry such as voluntourism efforts, https://www.facebook.com/CruiseForward.