Marriage banns question

I think I found the civic marriage record or announcement for some ancestors from Paterno and had a question about overall format. I've noticed some couples have a very brief entry and others, like the one I found, for nearly 2 pages. Is there any rhyme or reason for this? And what, besides parents, info could be gleaned from this?

I'm interested in Carmelo and Concetta in this entry, continues onto next page
https://antenati.cultura.gov.it/ark:/12657/an_ua82828/5GEAoWv