I've seen dancers merge back into the band...stand with a hand on one of the members of the bands shoulder...pose next to the drums....turn with your back to sudiance...that way the focus is back to the band for a moment. It is respectful and shares the attention with the other artists.

I just usually relax smile and may be speak to some but I stay in posture --- I do not loose that but it is relaxed. I usually do not adjust my costume unless I step off to the side. I may even do something silly. Just relax and have fun with entertaining but keep the dance posture....I bet it seems a lot longer to you than it really is and the crowd will be impressed with you being comfortable with just being there....

Also...if I know they will need to change up instruments then I will do a fun exit at the end of a song and step off to the side to grab a sip of water or adjust something then enter when they begin.