We went to Viðey island for Viking horse riding tour, which was a combination tour with Blue Lagoon trip. We were picked up from the parking lot by the Iceland Excursions main office (close to harbor)by a very friendly gentleman. Short ride in the bus, then ferry and then wearrived in Viðey Island.
My mother had not been riding in many years, but she climbed on the horse, and enjoyed it very much. Such beautiful island, no traffic, no noise. Cafeteria was not open that time in the morning.
I loved the ride,even though it was rainy.
Waterproof and helmets are available, but bring your own gloves as it can be cold and there weren't many pairs of gloves available for loan. Horses were well looked after, and appeared happy. Staff were friendly and helpful, and this was a good ride for beginners too.