Last month, I was geniuinely looking forward to seeing Scion's free MF Doom set. I even made a point to try get there early to avoid the inevitable lines. However, one thing lead to another and I didn't get over to Sonotheque until 9:30p. (which is still a bit early in my book) And, sure enough, the line was already backed up all the way down the block. As much as a free night at Sonotheque with MF Doom providing the soundtrack sounded great, it just wasn't worth the wait. Besides waiting outside in the freezing cold for at least 30 minutes, I knew there would probably be at least another hour or two wait once inside before Doom's set would begin. This hour or 2 wait would also mean numerous trips to the bar, resulting in a night that would end up being anything but "free."
The people at Scion are putting together some great shows and probably reaping some great PR, but unless you have all night to kill and have a huge hole burning through your wallet for drinks, I'd recommend resisting the temptation of checking out these "free" events.