There are several restaurants and discotheques floating over the Brahmaputra river in Guwahati, Assam. We went to one of them and ate fish and rice. The boat would move at 8:15 and return only after 9:30 when our train would leave the station some kilometers away for Kolkata. So we had an hour to order and eat the food as we had reached there at 7 pm. We finished just in time.