Having booked separately from my friend we were scheduled in different vans, but Brett sorted it in a second and off we go for an amazing day tour around the island with, luckily, a really funny random group from all over the world.
Brett had an amazing charisma and knowledge which made the day as smooth as possible, not only we all managed to interact with each other and the group but we also felt comfortable in exploiting Brett's knowledge about volcanoes and the Hawaiian culture and heritage, we learned local history and geology whilst having fun all day enjoying waterfalls, lava's anecdotes, Brett's ukulele and as a cherry on top, we were also given a nice rainbow at the end of the trip which we were all wishing for almost accepting we weren't gonna get one :)
Totally recommend this experience and make sure you ask for Brett if you can