Even before the plague, "reel-only" items were in a sort of limbo ever since FamilySearch discontinued microfilm distribution several years ago. (The materials and equipment had simply become cost-prohibitive.) Many (most?) of these films are actually digitized, as evidenced by the number in the catalog's DGS column, and they are actually online; they're just not on the parts of the FS servers that can be seen from the "front door". You need some form of "back door" access, for which there are various bits of software written by various genealogist-programmers around the world. The one I use was written by a Hungarian genealogist and computer whiz who lives in Germany but is one of the more active members of MACSE (the Hungarian genealogy association).
I can't seem to attach anything to messages in this interface, but I have looked up the marriage in question; it's on image 767 of digital film number 4946483. (Being 1942, it's in Slovak.)