I mentioned the “couple meal” thread here to a friend yesterday and he just sent me to a link where somebody posts quick Questions and Answers from Rav Shlomo Aviner, Rosh Yeshivas Ateret Cohanim/Ateret Yerushalayim, a religious Zionist Yeshiva in Yerushalaim.
Here is one of the questions:
Q: I heard that during the first year of marriage it is forbidden to invite guests for Shabbat?
Why do you need to know who asked? The title of this website is the yeshiva world. Presumably, that includes tzioni yeshivas also. I took it to refer to yeshivish wold, but in reality, that’s not what it’s called.