had many problems booking thru viator. first reservation i made was cancelled a week later because it was thanksgiving. i get that it was thanksgiving but viator took my reservation!!!! the second reservation i made was changed 5 days before our trip because the equipment i reserved was not available at the time i chose. Had to call company directly to get it taken care of. then when we arrived at company they could not find our reservation, that may be the companies problem but i have never had a reservation with expedia or any other website have so many issues.