Our self-drive adventures have been optimized for the best value experience, which includes doing some thrilling activities in the amazing Icelandic nature. As the packages are offered at the best possible price no partial refunds or modifications to the itinerary can be permitted. That includes opting out of an included activity and getting a refund for that activity. You can, of course, choose not to do the activity but as mentioned there would be no partial refunds of the package price.