Many cruise lines are adult only oriented, but its a little harder to find a seniors cruise line. Its important to thoroughly research any potential cruise lines. One helpful site is http://www.cruisecritic.com/cruisestyles/area.cfm?area=31
There are numerous Caribbean cruise options offered by major cruise lines. For example, Holland America, Royal Caribbean Cruise, and Princess all offer cruise options at competitive prices.
Most cruise line cater to the elderly as well as to families. here is some good information and a place where you can find good deals on cruises for seniors; http://www.cruisesonly.com/
I think elderly accommodations on cruises will vary by cruise line. I suggest you contact specific cruise companies to ask them their policies on elderly accommodations on cruises. Before booking any cruises, make sure to double-check that those accommodations are in effect on those particular cruises. Good luck!
There are cruise lines for virtually every demographic, and many of them have certain things to suit their guest's special tastes. A popular choice for retirees and elderly is the all inclusive senior citizen cruise "http://voyagemasters.com/seniors.html"
Many cruise companies have cruise options that stop at ports in New Zealand.
Actually there are several different options in order to find websites that specialize in booking a cruise online. Some examples for such websites include "eCruises", "CruiseOne" or "The Cruise Outlet".
Some amenities on the Carnival Destiny cruise ship include a spacious casino, a spa and fitness center as well as a wide variety of entertainment and dining options.
Some travelers like to be insured when they are on a cruise, or other travel. Here is a site that offers travel insurance options for these people: http://www.travelguard.com/travelinsurance/cruise.asp
Some great vacation spots for the elderly are get away resorts in the mountains. You can choose many different activities, most of which don't include much walking. Another great thing is to take a cruise on cruise ship, although the costs can run very high, it would be very enjoyable.
There are many affordable travel options available to seniors. For some examples you can visit such websites as www.seniortours.ca/ or www.safaris4seniors.com/
There are many options of reputable cruise lines that will offer an enjoyable experience. Some of the most popular include Carnival, Royal Carribean, and American Cruise Lines. Each has an area of specialty based upon personal preference
Best is a relative term and depends on what you want in a cruise. Look through the cruise options offered by Royal Caribbean, and then compare other cruise lines' prices and options for the same destinations. You can check out Royal Caribbean's cruises here: http://www.royalcaribbean.com/home.do