Its a MIRACLE!
(I'm going to copy paste this in a few threads I was following so apologies if you see this twice?)
After about 5-6 long support calls over the span of the last two weeks, floating around to diff support staff and engineers thinking this was never getting resolved and my notes were lost forever. My Notes reappeared on my device! Curiously not on iCloud, but that doesn't matter because I could immediately back them up. I agree with what most everyone has said before, call support and be patient but persistent. Because of how time consuming it was I almost bailed yesterday, but instead thought this am just to open Notes one last futile time, then poof. Like everyone else also said I have no clue what the cause was, but at this point don't care. Marcia from Apple Support was also incredibly patient and I plan on emailing folks at Apple to recognize her effort. I can go in to a lot more boring tech details so just ask if anyones interested? I'm also thankful to the folks on these threads that take time to post, because without that and knowing like a lot of these types of tech issues (I work in iT) are not an isolated experience I might not have been as patient or persistent? It was also refreshing to know that I wasn't the only one putting a lot of data into iNotes without enough backup (outside of iCloud?!:) Anyway, thanks!