Age limit Blue Lagoon Support February 19, 2020 14:39 Updated Minimum age for the Retreat Spa is 12 years. Minimum age for the Blue Lagoon is 2 years. Articles in this section What happens if I don’t arrive at the time I’ve booked? What is the minimum age for using the Retreat Spa? Is access to the Blue Lagoon included with my Retreat Spa booking? Is it necessary to book online in advance? Is there a maximum time allowed in the Retreat Spa? Complimentary refreshments Valuables Smartphones, tablets, and cameras Hair conditioner Your electronic bracelet See more