Good company and good, good music - That's a combination I recommend.
But let's face it, 6:30-10:00 straight on your feet when you're pregnant is asking a little too much. The last part of that concert became instantly more enjoyable once I sat down. I did almost get trampled when that girl in front of us fainted, but hey, it was worth it.
Now if we can just convince every artist I love to make live albums so I can enjoy all that goodness from the comfort of my couch..