I used this to get from our hotel to the airport, with a relaxing few hours to kill at blue lagoon prior to the flight. They were on time and kept our luggage for us too. Highly recommend. As a side note, Kef airport is one of the nicest airports to have to wait for your flight in...everything you need is after security.

My 3 stars is because either Viator or the company that ran the tour booked our tour for *January 14*, even though our voucher clearly stated *February 14* and we didn't even book the tour until 2/7. Because I had experience with IE, and knew that they are a very timely company, when they still hadn't shown up 15 minutes to departure, I became concerned and called. Viator and IE were very quick to resolve the issue and I was able to see go to the tour...but my advice to future travelers is to definitely call if you haven't been picked up 20 minutes prior.

I deducted the second star just because the tour itself was lackluster. It's basically transportation to the said areas and you get just enough time to experience it before heading to the next place. The areas are beautiful and amazing....but don't expect the tour to add any value beyond that.

Good experience, though we made the mistake of doing this just a few hours after we landed and it's certainly a fairly strenuous activity. Be prepared to crawl on lots of tiny rocks with sharp edges for parts of it. Deducted a star because the guide went way too fast and we were left trying to find him most of the time (and it wasn't just jet-lagged us because the entire group was going the same speed as us). He would dart far ahead and wait for us to catch up, say a few things, then dart again. Maybe that's supposed to be the "fun" of caving....but I wanted a guide to stay closer so we wouldn't go down a wrong way.