We are a group of 6 to 7 people including 2 kids (age 9 and 11) planning to travel to Sri Lanka this December. We will be going from Yala to Nuwara Eliya. Planning to do Horton Plains, a stroll around Gregory Lake, visit a tea plantation and finally taking the train from Nuwara Eliya to Kandy. I read in some reviews/posts that it is enough to spend one night at Nuwara Eliya. In our case, one or two nights is better?