How can you even enjoy the concert? Even in little Kirksville where people routinely leave bikes UNLOCKED and they don't get stolen, I'm nervous if I have to leave my bike unsecured and out of my sight for a moment. I've wrapped the cable lock around so it looks locked. (I keep my cable lock locked so I can't accidentally lock up my bike if I've forgotten my keys.) I could never relax and enjoy an entire concert in those circumstances!
I'm a high strung person...you must be a lot more laid-back than me.
2009 Trek 7.2FX WSD, brooks Champion Flyer S, commuter bike