Since you are heading to the place of birth of the world-famous tea brand 'Ceylon Tea', why will you miss a chance to explore how it's made? During your honeymoon, explore the central hill country (Kandy) or Nuwara Eliya where Ceylon Tea is produced in mass quantities. Choose to walk through a tea estate which is a pretty relaxing experience and exchange smiles with the workers. You may even try small talk with them (they'll not be very fluent in English, but they'll always try to communicate!), and if you like, you may also help them pluck a few leaves and fill their baskets. If a tea factory is available at the plantation you visit, don't miss going in for exploration too.