We are staying at JAL Kannai Yokohama and would like to do a day trip to Nikko National Park around August 8,on our own. Exactly how do we get there, how much does it cost? Once we get to Nikko, is there a bus to the National Park, and once in the park, can one get on and off buses at various locations. Or must we use a guided tour? Any suggestions would be greatly appreciated - thank you.