They are not allowed to impose other conditions, as long as the Catholics in question approach the sacraments in a dignified and respectful manner.
This is a legitimate complaint under canon law, I would think, but something the bishop would do his best to delay interminably.
Thank you, that actually makes even more sense out of it than just treating it as a generic worship service.
If a bishop or someone who reports to him is administering communion, then a believer should not be barred from receiving it on account of something that is not even in the bible, let alone the canon. The bible says it should be received in a worthy manner. I’d think that being willing to guard your fellow Christian would be a positive example of a worthy manner. And that wanting to prevent that guard would be a negative example of an unworthy manner. I can imagine the Catholic knights of yesteryear hooting if they envisioned this scene.