Your case has been accepted at this point, since you've already received the NOA, a rejection is no longer applicable. A case denial is what is not certain at this point as that is FO dependent. Yes there are lots of people from the past couple of years who did early submission and got through effortlessly. There are also others who were not quite lucky.
You will receive a denial notice if your FO is one of those who still deny petitions due to early filing.
Anyway, like I earlier on said, spend some time going through the AOS spreadsheet, don't consider it irrelevant simply because you've already submitted your AOS petition.