I can say I've done a bit of 'bench warming' myself. No envy or jealousy developed because I'm a patient man and it was simply that the ladies I wanted to play with were occupied.
When one of the ladies was done that I was looking forward to play with, I asked if I could be next on her 'dance card'. She said yes, but she needed to 'recover' for a bit. So we had a lovely conversation and friendly petting while she recovered. After that we had a wonderful time playing.
I think there was only one party we went to that nobody really appealed to me. But I still got to see my lovely bride getting her rocks off, so it was still a fun time for me.
I don't ever feel that it is a problem for me to warm the bench. I just bide my time. Everyone wants to play at the parties we go to.
I do however find myself trying to get 'first dibbs' on some ladies that I know will be arriving...