http://www.revision-party.net/ - 22nd to 25th of April 2011 - Time until opening :

Supporter tickets

You love what we, the Revision organizing team, do with our event? You'd like to support us even more than "just" with your entrance fee, releases and demoscene enthusiasm? Then a donation with our supporter ticket is for you! The supporter ticket is a higher-priced entrance ticket that buys you some nice bonus specials and the good, warm feeling of supporting Revision and the demoscene at its best.
Although an event like Revision receives a lot of financial support by sponsors and of course by all its visitors, it's not easy these days to get the budget ready for an event as big as ours. So, if you can afford it - why not become a hero of the demoscene and support us with your donation?