I took the Hoover Dam-Colorado River kayaking tour. The trip was very well organized and all of the staff members were friendly and extremely accommodating. The tour guide, Eric, was extremely patient and very attentive to everyone's needs. Eric consistently made sure everyone was happy and took the time to interact with all members of the group. Grand-Adventures took care of every detail, including food, water, and transportation. The kayaking tour is a 10+ hour trip and quite an arm workout, but 100% worth it! I highly recommend Grand-Aventure tour company to anyone looking for a wonderful outdoor excursion.