Well worth the 10 euro pp ticket. Amazing views of the Killarney lakes and the mountains and the boat captain is full of knowledge. We booked in person in the office building in the main part of town where all the other tours meet, but you can book online and meet at Ross Castle where the boat leaves from. The boat is large and many elderly people were on board. Also suitable for kids. The boat is covered and climate controlled. The roof hatches will open if weather permits. read more