Hawaii is paradise for children: beaches to run on, water to splash in, and unusual sights to see.
The larger hotels and resorts offer supervised programs for children and can refer you to qualified babysitters. By state law, hotels can accept only children ages 5 to 12 in supervised activities programs, but they often accommodate younger children by simply hiring babysitters to watch over them. You can also contact People Attentive to Children (PATCH; tel. 808/839-1988; www.patchhawaii.org), for referrals to babysitters who have taken a training course on child-care.
Baby's Away (tel. 800/496-6386 or 808/222-6041; www.babysaway.com) rents cribs, strollers, highchairs, playpens, infant seats, and the like. The staff will deliver whatever you need to wherever you're staying and pick it up when you're done.
For more information on Honolulu with children, see my book, Frommer's Hawaii with Kids.