There are walks each day which are free. Bike rides are also free as long as you have hired a bike. All other optional activities have an associated cost. These can be found on the activities section of the website or in our activity guide on board the bus. Apart from the Routeburn walk and Dolphin Swimm in Kaikoura, these do not need to be booked in advance. Your driver/guide will give you the low-down the night before of what is coming up the next day and you just need to let them know what you would like to do, they take care of everything after that.