Viator was very efficient throughout the registration process and sent periodic reminders about our trip via text and email as the tour date approached. The representative on the phone at the time we signed up was helpful, knowledgeable and friendly, and subsequent calls closer to the date were made to review lunch choices and give us revised pickup times. (Hotel pickup was one of the reasons we chose this tour.) On the day of our tour, the Crossroads Tours vehicle (clearly marked) pulled up on time (even a few minutes early) and we were on our way to Yosemite! Our tour guide, Rose, was well acquainted with the park, as she has been going there since she was a child. Her personal experiences blended with her wealth of knowledge about Yosemite made it an informative and very enjoyable day. The tour includes some uphill walking on trails, so sneakers were a must. The picnic lunch was tasty and they were able to accommodate my dietary needs. Plenty of water was provided along the way, and there are restrooms at most areas where we stopped in the park. Rose was extremely friendly and easy to get along with, and her love for Yosemite was evident. Some highlights were the walk through the Tuolumne Grove of towering redwoods, the picnic lunch and mini tour of the Ahwahnee Hotel, the spectacular views of El Capitan (Binoculars were provided to look for climbers!) and the Tunnel View. A wonderful day!