I went twice. Once before 8pm and it was VERY quiet but it started getting busier by 10 and the music was great. The next week we went in just before 10 so it was a bit busier and it was great until about 11.30 when the mixer blew up and everyone left the Sunset Terrace for the other rooms. My advice would be to head in just before 10 for 20 euros (loads of wristbands everywhere) enjoy the Stripped part for a couple of hours then head into the Terrace and Discoteca when they start getting busy around midnight. On the 7th Sept the Terrace was absolutely jumping all night and the main room was awful