A physical challenge for sure. Hiking for 4 miles does not sound tough, but the inclines, the rough lava surface, and the hike back out turned in to quiet a challenge. Our guide was a nice young man, but not the naturalist I had hoped for. He was more focused on speed than information. We did get an extra stop at the nut factory, but that may have been so he could enjoy the ice cream. We also visited the rain forest and really enjoyed the cooling shower while we took pictures of the scenery and falls. Our time was short at this stop to make up for the nut house, but we probably didn't miss much.
A very informative tour of a local coffee farm and a chocolate factory. It is the only place they take the cacao beans from the tree to the wrapped bar. Some really good samples at both places, but the background information was even better.
Great tour guide with a neat 4 seat helecopter. We spent 60 minutes in the air visiting all parts of the island from the airport, to the coast, to the canyon, to the falls and beyond. As a first helecopter ride, we were both very excited and pleased.
Walking on the beaches and in the shopping areas of Honolulu is a full schedule for 2 or 3 days. My only regret is that we missed the tour to the north shore. We were told the waves are not too good in July, so we really didn't miss much.