My rule of thumb has always been that if (as lady) I really don't wish to dance with someone I will politely refuse and after must sit out the entire dance. I would never say no to someone and then go dance the same dance with someone else, unless I had previously promised that specific dance to someone else and said so. It would be like a slap in the face. Very rude.
Agreed, I have been asked on several occasion but explain that I am waiting for my husband, some of them are not happy with that. We often have dances here that are progressives and find that very challenging as alot of people cant dance in time and try to chaises waltz and it is just awful, so I am getting fussy