Amusing isnāt the word. OMG, theyād have to wait a whole month???

Or maybe more?

How could that be?

I suppose if they lived in the wilds of Siberia or on a deserted atoll in the middle of the Pacific maybe, but in matter of fact, how many people are in that position? Whenever I see that silly canon I cannot help but think that it was inserted as a ālast resortā measure after someone on the law commission saw a bad 1950s disaster movie.
They have to have completed whatever prep is required by the more conservative pastor (or that church sui iurisā requirements).
For an American Ruthenian Greek Catholic, for example, the preparation requirement is at least a year, last I heard. So, to be justified, one would need to be in a place with no priest for a year and a month⦠or do the prep by teleconference. Which said, Iāve seen done. A couple in one of the remote islands did their prep by phone, and had to wait for a priest to arrive to do their wedding (they got the ABp of Anchorage⦠because he was the available priest with a plane for their deacon-run parish).
Technically, marriage requires the permission of oneās bishop. Most dioceses and eparchies presume permission of the bishop by completion of the preparation. (In my case, I had to get the local Archbishopās permission in person, because the deacon doing my prep, in the Roman church, refused to consent, and the pastor would not override him. 18.5 years later, still with the same former lutheran (who has since apostatized from Christianity, and never has been Catholic, but thatās a whole 'nother issue - suffice it to say I donāt recommend trans-denominational marriages but have managed to make mine work, and it does take a LOT of compromise). Fortunately, I had a deacon, two priests, and a dominican nun in my corner⦠and was personally known to the ABp on a first-name basis. (Itās good to be the son of the Cathedralās deacon.)
The requirement for the priest to be absent for at least 30 days doesnāt bypass the requirement for adequate preparation. See
CCEO 783,
784,
796,
828,
832
The sum of these is that preparation is requisite to licity, and potentially to validity, and thus it is required that the customary preparation be done⦠itās only if the permissions and preparations are done and there is still a āgrave inconvenienceā (CCEO 832) that a non-Catholic (read: Orthodox, Old Catholic, PNCC, etc) priest may be used, or in the absence of a valid non-catholic minister, then and only then by public affirmation before witnesses.