Ditto from me too. You won't be disappointed especially if you've got a 4wd, can I suggest you book a fishermans cottage for 2 or 3 nights as they are cheaper and you have your own cooking facilities. If you go over go froms Inskip point as the ferry is cheaper and the trip each way is only about 10 to 15 minutes.
For a day trip to Fraser Island suggest the commercial tour. They pick you up at the front gate of the caravan park, take you to the barge at River Heads. The barge also takes vehicles across. You can have a coffee or beer on the barge. On return the bus drops you back at the caravan park gate.
Cost last October was $68 which also included a good sized lunch at the 'Sand Bar.' On our first trip a nice morning tea was set out; on the second trip we had to ask at the coffee shop while the third time we had to ask at the bar and make our own coffee/tea! I think if there is a large group then morning tea will be set out.
A 4WD 'bus' tour around the island costs extra. If the tides are right another good tour is through the mangroves by canoe.
The whale watching is completely different to the Fraser Island trip and we never went on one having seen them out of Merimbula several times. They leave from Uranga - which also has a nice club - the Boat Club. The dining room overlooks the boat harbour/marina.
