In the old days wine was alcohol, and wine was used to purify water of bacteria.
Unless you drank from a moving water source, one needed to use wine to cleanse stored water to be safe to drink.
Wine, in the Antiochian Church, is abstained during the weekdays but not Saturday and Sunday. I take this to mean no alcohol except on the weekends.
As for drinking to "get a buzz," yes that should be avoided, but a single beer (or two) isn't breaking fast, unless that's enough to get you drunk.
As for olive oil, I assume that is to be taken literally, and not merely to abstain from all oils. After all, one could not eat peanuts because that has oil? Most foods have some kind of oil in it, and my bishop has always taught it was just olive oil. Other oils are okay.