I've posted on this topic several times, but I'll say it again its definitely worth it.

The pro's definitely outweigh the con's - as mentioned the only really con is that it can be a little noisy if you're near the food tent (which we were in 2012), but ear plugs can sort that out. Didn't go this year, but the addition of the pool and free-ish massages last year were an added bonus.

Looking forward to returning in 2014.