Is it bid’ah for daa’iyahs and seekers of knowledge to get together on Friday nights to get to know one another and to study together?

The daa’iyahs in this area have agreed to get together one night every week, to listen to lectures, get to know one another, hold seminars, study and do da’wah. They chose Friday nights for these gatherings, so that veryone, near and far, can come together and each one can bring enough food for himself for this evening. Is this bid’ah as in singling out Friday nights for an act of worship as this scholar said, or not? All they are intending is that Friday night should be a time for gathering together only, not for worship. For my own part, I am taking a defensive stance on behalf of these daa’iyahs. I think that this gathering and their getting to know one another is something which is important and is a means of creating harmony among them and promoting the da’wah. What is the correct view oncerning this matter?