I went last year on one Friday night to see, ahem, Timo Mass.
It's a little strange not having the terrace open, just the dark inside room. Really suited Herr Mass in there though. He played all night, warming up for himself with some strangely funky stuff (for him) before it became, as he says 'wet and hard' later.
had alot of fun, really mixed crowd too.
I think DC10 are quite aware that if they put on toooo many nights, they may fall foul of the dreaded 'disco mafia' so grab the chance whilst you can.