I believe we had to meet in one of the lounges at 9:15 to get our "stickers" for the excursion. We only did the dolphin encounter, booked before the cruise began. From what I understand, this is one of the excursions that fills the quickest. I heard people on the cruise saying they had tried to book it after boarding and couldn't get in. Then again, I was told you could book directly through the Blue Lagoon. I'm not sure of their web-site address, but was told they have one. I did see that the "swim" was $165.00. My sister was going to "upgrade" her excursion from the encoutner to the swim, but decided against it because the time they could get her in was too late for her (She wanted to go to Atlantis after our encounter).
After we showed our tickets/waivers, ID's, and got our sticker, we had to wait maybe 5 minutes in the lounge. A guide came and got as us a group to leave the ship and walk to the ferry. This was maybe a 10 minute walk. The ferry took about 40 minutes to get to the Blue Lagoon. You can return on a 2PM or 4PM ferry. Our return ferry stoped on the way back closer to Atlantis before returning to the port closest to our ship.
The excursion is for ages 3+. Our youngest son was 3 and enjoyed it tremendously.
I just looked up the web site in my Passpoarter's field Guide:
It is
www.dolphinswims.com;(242) 363-1003.
The blue lagoon also has a "beach day" excursion that is $38.00/adult
$23/child. This web site is
www.bluelagoonisland.com (242) 363-3333.
If you book the latter, and decide to do the dolphin encounter/swim, I'd certainly check to see if they'd put those costs towards the encounter/swim. They were more than willing to let my sister upgrade from the encounter to the swim without a problem or loss of money.