Hi Gill,
The majority of overseas transfers are by coach or minibus depending on the size of the group unless otherwise stated in the itinerary.
In terms of Day 4, the cable car is part of the visit to Komagatake Summit, If you do not wish to take the cable car to the summit, you will be able to take a walk around Ashi Lake, we would ask that you advise the Tour Manager of your plans so they are aware that you wouldn't be going up.
Kindest regards,
Julia