This was the best tour I have ever been on. The people who worked for Viator were friendly and very accomidating. You will not be disappointed with this company.
I would like to share a personal experience. My tour took a short flight to the Aran Islands. By the end of the day the fog had rolled in and we could not fly off the island. The tour group booked us passage on the ferry back to Galway. We missed the train leaving Galway returning to Dublin becasue the ferry was slower, however once again there were no worries for us because the tour group put us directly on the correct bus back to Dublin.
You cannot control Mother Nature, however Viator took control of the cards that were dealt and ensured we arrived back to our original destination completely safe.
I will always use this company in the future.