Oh, another thing. Be wary of being taken on a diversion by tuk tuk drivers to tailors shops/jewellery shops, etc, etc. They're on a commission so some will do that hoping you will buy.
You will see poverty in Sri Lanka, but it's an amazing place where practically anything that grows - from cotton, to rice, to tea, and every spice imaginable, seems to grow. If finance isn't an issue, choose a high quality hotel, make good use of the tuk tuks and taxis - and enjoy!