I've only ever really been to sitting concerts, honestly. I think I've only been to three standing concerts, and both of them had some seats. Two were Christian Rock concerts/conferences/whatever which were at churches with seats (I sat for a good portion of them and even when I was standing I hardly danced), and the other was an indie rock concert at a club at my school I went to a few weeks ago (I sat the entire time I was inside...which was only like 15min of the concert because it was free for students so it took forever to get inside). To be fair though, I mainly go to classical, jazz, and musical theater/opera concerts. Those are sitting only, so it's what I'm used to and prefer greatly. I never know what to do with myself when standing at a concert, and would rather just focus on the music. If I get really get into the groove of the music (usually happens at jazz concerts if the rhythm section is any good), I can just bob my head or tap my foot/fingers/hands along with the beat.
I also used to work at a Theater/Performing Arts Center for a couple of years and most of the concerts we had there were sitting only, regardless of the genre. Beatles tribute groups, crooners, folk groups, dance shows, jazz groups, they all were mainly sat through. The only one I can remember that people actually stood up and danced for was the Motown tribute group we had one year. To be fair though, most of our clientele was a bit on the older side because this is Florida and our number one import is old people, so it's a bit hard for them to dance without hurting something.