adorable: Well, I’ve only been to 2 mitzvah tantzes, and I think they had the same badchan. When he did his rhyme for each person, he ended by saying “Good Shabbos, good Shabbos, good Shabbos…”
I know that one of the weddings was on a Sunday, I don’t remember the other one. I was wondering why he said Good Shabbos. I asked my father, and he told me it’s a minhag that badchanim say Good Shabbos at the end of each rhyme/introduction, no matter what day it is.