They installed on my 13 Pro Max, and on my wife's, when we purchased back in late October. They didn't have the normal jig to align the protector but I asked them if they would do it anyway and they did, without any hesitation. I figured they do these things all the time and would be better at it than I would.
By now I would expect they are set up to do it, but even if they are not I would take the same approach and expect that they would be helpful and do it if requested.