I am required to do an 8 Panel drug test, and my probation into says don't drink within 24 hours, does an 8 panel test EtG or just alcohol, I can't get an actual clear answer

Only your P.O. would know, for sure, but if you are required to abstain from drinking alcohol only 24 hour prior, that would not be a good rule if they are testing for EtG, since EtG can show up long after 24 hour mark.