1. The Thames River is the longest river in England and flows through London, dividing the city into north and south. It is one of the most important rivers in the history of the country, playing a significant role in trade, transportation, and recreation. Some interesting facts include:

- The Thames River was once known as the ’River of Life’ because it provided London with fish and water.

- The river has a tidal range of up to 7 meters, which makes it rise and fall twice a day.

- There are over 200 bridges crossing the Thames, including the famous Tower Bridge and London Bridge.

- The river is a habitat for a variety of wildlife, including fish, birds and seals.

- The Thames is lined with many famous landmarks including the Houses of Parliament, the London Eye and the Tower of London.

2. The Thames River is accessible 24 hours a day. For information on river cruises and boat tours, you can contact the City Cruises booking office at +44 20 7740 0400 or visit their website at https://www.citycruises.com/. If you wish to take a Thames Clipper boat for transportation, you can view their timetable and ticket options on their website at https://www.thamesclipper.com/.

3. Ticket prices and transportation options vary depending on the type of cruise or boat tour you wish to take. For instance, City Cruises offer different packages of cruises such as sightseeing, lunch cruises, afternoon tea cruises, or dinner cruises. Prices can range from £10 for the sightseeing cruise to £115 for the dinner cruise. For Thames Clipper, you can purchase a single fare ticket for as low as £4.50 or a River Roamer pass for £18 where you can travel all day on their boats. It is best to check their websites for more information and ticket options.