At Sunday Mass, yes, people may sit wherever they want. And if parishioners want to come to funerals to show support, even if they don’t personally know the deceased, that is also fine. But if they do, I think they need to sit…not in the front row. I think it’s fair to say the parents of this server should not have sat in the front row of someone else’s funeral just because their kid was serving. I understand why the family of the deceased was offended by this. I myself would be outraged and would want to say something, much like the OP’s friend.
In our parish, it is recognized that the front row is better for older people. They do not see as well, they do not hear as well, they have a harder time standing in the line for Holy Communion.
Yes, it would be good if someone could explain to the family of the server that while it is understandable that the grandmother would want to sit in the front at a normal Mass (for the reasons I gave), it is preferable that they not sit in the front at a wedding or a funeral, as those areas are typically used by the families and only by the families.
That, however, is not something for a typical fellow parishioner to say to them. A close friend might say it, an usher at a funeral or wedding might be alerted about the need to head them off at the pass or move them prior to seating the family, but that isn’t something that we in the rank-and-file can take upon ourselves. Those being given this embarrassing direction are usually going to be defensive. This needs to be handled by someone who very clearly has the authority to move them. Otherwise, what if you have a row right before a wedding or a funeral, right up in front? You’ll have made a bad situation worse.
If you were upset that someone was
not moved from a section you intended for your family at a funeral of your loved one, imagine how upset you’d be if someone you
did not want moved was moved by someone who took it upon themselves to insert themselves into a situation in which they had no jurisdiction, particularly if there was a public row about it! No, this is something you have to leave to just the few whose job it is to do it. If they don’t act, the act must be left undone.
Generally speaking, I’d say that for funerals it would be well to alert the people from the funeral home doing the funeral arrangements. Let them handle it. At a wedding, alert the ushers or groomsmen. Then let those with the office to take care of these things do it.