Here is a review of the ship taken from Cruise Critic:
Thomson Destiny, the largest ship in the Thomson fleet, originally entered service in 1982 as Royal Caribbean's Song of America. In 1998, it was sold to U.K.-based Sun Cruises (the cruise division of the tour operator Airtours, later MyTravel) and renamed Sunbird. The ship was bought by Louis Cruise Lines in 2005 following MyTravel's departure from the cruise business, and it has been chartered to Thomson ever since.
Most of the 725 cabins are of standardized, modular design and are quite small; however, they are adequate for the seven-day cruises this ship generally operates. There are a few deluxe cabins and even a few suites with private balconies, added by Airtours in the 1990's.
Dinner is a standard two-seating arrangement in the main Seven Seas Restaurant, with open seating for breakfast and lunch. The Lido Cafe is a 24-hour casual dining spot and there is also a Pool Grill. Unlike Thomson Spirit and Thomson Celebration, there is no a la carte alternative restaurant on Thomson Destiny.
Thomson Destiny's public rooms include the Can Can Lounge, the ship's main show lounge; a smaller secondary show lounge, the Oklahoma Lounge; several bars, including the 360-degree Sky Bar (once Royal Caribbean's signature Viking Crown Lounge), and the nautical-themed Clipper Bar (again, a former Royal Caribbean stalwart, the Schooner Bar); a casino; a library and Internet cafe; a card room; shops; and a spa, beauty salon and gym.
Because it was designed for sunny destinations like the Caribbean, one of the ship's strong points is its open deck space; this includes one of the first modern top-of-the-ship pool decks, with two large pools. There's also a variety of other open deck space including a full wraparound promenade deck and a sports deck. There is a dedicated area for 3- to 12-year olds.