Seniors can and do travel to the Virgin Islands [1] in great numbers. Don’t expect senior discounts, however. Elderhostel (U.S. toll-free 877/426-8056, www.elderhostel.org [2]) organizes one or two trips per year in both the British and U.S. Virgin Islands, often focusing on historical preservation. The American Association of Retired Persons (www.aarp.org [3]) publishes destination-specific travel advice for destinations around the world, including the Virgin Islands.
Links:
[1] http://www.moon.com/destinations/virgin-islands/discover-the-virgin-islands
[2] http://www.elderhostel.org
[3] http://www.aarp.org