Hey tayto man... I am heading there in a few days and aim to buy the ticket at the park entrance. I've just realised that the annual passes offer the best value for money, especially as you can now get a free annual pass for <7 until sometime in July.
I was going to get 4 3day/2parc hoppers costing €518
I can now get 3 annual passes for €387 and 1 kid free.