Brilliant trip all round! Our transport arrived on time and tour guide, Chris, was excellent. Friendly and amusing without being OTT, he was very knowledgeable and informative throughout the whole journey and obviously fitted in as much as possible in the time allowed. The Hoover Dam was awesome and we were well impressed both inside and out. The river float was fun and enjoyable. It's not a rafting trip (we hadn't expected that after reading other reviews) but it did last at least half an hour and we saw the dam from a completely different and wow factor perspective. We enjoyed the trip so much that on our return we booked another tour later in our holiday to Zion Park - also brilliant!