No transportation is needed to blue lagoon. Its the same Ferry Disney takes you too and the same Ferry drops you off in front of the straw market but if you want to go straight back to the ship, its about 5-10 walk along that side walk and you are back in the bright colored cruise terminal building. However we booked thru DC and had a great time. Having booked many with cruise lines and many without , I can say that all the ones we ever booked thru the cruise line were great. All of them. The ones we booked independently well they weren't disasters but we didn't always get what we expected or were hoping for SOME times. (Taxi to chankanaab was just fine, jamaicaforaday took well over an hour line before we got into resort and then the bus picked us up an hour early.) Point being I have learned that if I book with the cruise line, its prob going to be great. That at least has been our personal opinion..