___. A junior olympic, either 25 yards (SCY) or 25 meters (SCM), would probably be a more realistic option for a residential pool. Whether you decide on a short course or long course pool, there's no need to make the pool several lanes wide.
The most expensive cruise ship roaming the seas today is owned by Royal Caribbean International, the world leader in luxury cruises. Allure of the Seas is the largest and most expensive passenger ship ever built. It is only two inches longer than its little sister, Oasis of the Seas.
Therefore, prices for winter cruises are extremely low. For example, MSC Cruises and Norwegian Cruise Line offer winter Mediterranean and Canary Islands cruises for under $100 per person, per night (with some under $75 -- plus on MSC, kids 11 and under sail free).