I guess my husband and I are going to continue to debate this issue until I finally ask for some information. I wore sandals almost all the time we were In Turkey. There was no problem in Istanbul, but when we went to smaller towns on the Asian side, my husband thought that people looked at us as if they were offended. He is convinced I violated some custom by not wearing shoes that totally concealed my feet.
So what is the answer? We have a week of preparing meals riding on this answer.