Savvy hotels and ships are expanding with suites that sleep up to 15—and come with all the comforts of a luxury retreat.

Outrigger Reef
Credit: Noe Dewitt

Outrigger Reef Waikiki Beach, Hawaii

A family of 12 can relax by the beach at this Oahu property's four-bedroom Oceanfront Suite. The resort can arrange surfing lessons or a guided tour of nearby Pearl Harbor. Should you want to split up, there's retail therapy for the grown-ups at the massive Ala Moana Center and, for the adventurous, snorkeling at Hanauma Bay Nature Preserve. Afterward, everyone can reconvene for a sunset catamaran cruise into the Pacific.  Four-bedroom suites from $2,399 per night.

Beaches Resort Villages & Spa, Turks and Caicos

At the new Key West Four-Bedroom Butler Villa, head to Kimonos for the knife-juggling chefs, then ask for Elmo to read the kids a bedtime story. From $1,800 per adult per night, all-inclusive.

Nantucket Hotel & Resort, Massachusetts

The Captain Cromwell and Captain Daggett suites (which sleep 11 and 15, respectively) are both steps from Nantucket's powdery beaches. Four-bedroom suites from $3,645 per night.

White Stallion Ranch, Arizona

Families of 10 can now corral together in the four-bedroom Hacienda at this 3,000-acre ranch. Horseback riding, breakfast cookouts, and horseshoe tossing are just a few of the activities. From $1,400 per night, all-inclusive.

Royal Caribbean, Anthem of the Seas

The newest ships have the ability to connect up to four cabins, and offer activities like skydive simulators and bumper cars. Eight-night cruise from $1,200 per person, all-inclusive.