I have a 'bundle' of young people visiting for Christmas this year in Sydney. Ages range 21-29. This is their lst and perhaps only visit to Australia. As such, it seems a trip to the Barrier Reef is in order. After researching on the internet, I am more confused as to best location, best cost alternative, to arrange a visit for 5 people. The trip would begin from Sydney and could probably not last more than 3-4 days in total. Has anyone suggestions on the best place to visit the reef, good accomodations, restaurants??