Is it something someone holds as an official panel? Or is it an unofficial meet-up?
I'm Jewish (and a few other things). However, at MEW Con, I created a panel in which attendees of any faith or philosophy were more than welcome, at which a cool young otaku and sci-fi geek, who is part of Creation Station and Eugene's Anime Friday but randomly also is an ordained religious Dominican priest, ran folks through all the details of what it takes for him to put on a Catholic Mass. He explained his vestments, ritual objects, posture, positioning, gave an overview of changes in canonic Mass diction over the years, etc. The aim, as I framed the panel, was for those involved in fan creations, from fanficcers to fan artists to fan filmmakers, theater set dressers, and cosplayers, who wanted to authenticate how they portray anything in a Catholic setting, to be able to do so. He provided a detailed handout, not only with the call & response but also with vocabulary and resources. The two of the twelve present who wished to do so were also able to take communion and have the panel "count" as their Sunday Obligation, and anyone who didn't want communion was welcomed to come get a different type of (verbal) blessing. The part that was most interesting to me was (1) now I can have a sense of whether a film has done its research or is anachronistic in what it portrays, and (2) there were prayers I immediately recognized as direct translations from Hebrew from Jewish services, particularly the prayer that starts "Kadosh, Kadosh, Kadosh" (Holy, holy, holy). In Hebrew in full that would be: Kadosh, Kadosh, Kadosh; Adonai tz'va'ot. M'lo kol ha'Aretz mi michomo. Anyway. That was MEW. I don't know if it would fly at KC. I don't know if Catholic is what folks were seeking. But. If so. I can certainly talk to this priest about it. Of note: I do not support conventions holding religious services that are restricted only to active members of certain religions. I would only support whatever emerges if anyone, of any faith or philosophy, could attend.