We are going to be in Cairns for 5 days. Flying directly there from AZ, so we'll be tired at first. I figured we'd do the train/gondola the first full day...BUT my dream has been to snorkel the GBR. Trying to decide whether to do a 2 night trip or 1. I thought we could always add a day trip if we wanted to. I've done a lot of research on the different trips, and am sold on the Reef Encounter for live aboard as it's fairly small, and all of the cabins are ensuite. Any comments on the 3day/2night/vs 2 day/1night options would be appreciated.