Good to know,these things play on your mind you know.It's a shame we don't have a study on this,if we had the technology to calculate someones max height potentia,make sure this is your average teen and see if it has any significant impact on it.
But as you said i agree it's probably something insignificant like a few millimetres.
We do have a few studies. They're not about alcohol in specific, but the incidence of disease and infection in one of a pair of monozygotic (identical) twins and their final height. They're "essentially" genetically identical, so they all should reach the same height, right? No, that is not how it always goes.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3736755/This study accounted for nutrition and lifestyle, and saw that height discrepancies in monozygotic twins could be explained by a higher incidence of disease/infection, mainly during childhood, in the shorter twin.
However, it's not like the other twin
never got sick. As such, I say it's a logical conclusion that 99.999% of all people never reach their maximum height potential. Basically everyone gets ill during their lifetime - which will slow down growth if they're yet to be adults. While I don't think the lost height is significant outside of cases of malnutrition, the incidence of disease, specially during infancy, is also a factor. Hence, I think it's safe to say most people, even the naturally tallest on Earth, lose fractions of a millimeter before reaching adulthood.