In August we travel to Kerala for 2 weeks in Kochi, near Allepey, Thekkady and Madurai. Obviously, we will be able to obtain rupees on arrival at the airport but we don't want to carry too much cash, so how will we get more rupees later on ? Are there lots of ATMs in these places? I doubt whether the system of travellers cheques still exists, so what's best ? Help please !