Sorry for the belated reply, I just checked my comments today.
We're just drawing near the end of our contract deals now so we should be announcing the party officially with all the information in a couple of weeks. This is what I can tell you -
The Croatian Spill party will be on the island of Pag. The tickets will be 220 Euros and they will cover our accommodation, our transport from the airport to the island, entry to the two of the biggest clubs, Papaya and Aquarius and they will also include VIP booths. It will be a week long party starting on August 18th. Drinks will be cheap in Croatia and if you buy plane tickets early enough then it will be under £100.
Hope that helps mate, would be awesome if you came! Let me know if you have any more questions :)
I hate to argue against the guys of LEOG but DO NOT listen to them about not watching the first two. Believe me, they are equally as good as POA (even though I did not find that as strong as a movie like the second film). I will admit that the first movie is flawed but it is still a wonderful entry into the HP world. But the second movie you really must see, I think its Chris Columbus's best work out of the two movies he directed. Also the chamber and Dobby the House Else in the second movie makes an appearance once again in the last two movies and in order to avoid confusion I suggest at least watch the second one. Honestly though I think Cuaron is a bit overrated in the series and people tend to make Columbus as a horrible and he is not. That is all I have to say about that subject.