Are alcoholic beverages allowed in state parks?
Alcohol is prohibited in public areas in every state park. The only exceptions are resort lodge restaurants and lounges, which provide complete beverage service. In addition, the golf course pro shops at Deer Creek, Hueston Woods, Maumee Bay, Punderson, and Salt Fork offer limited beverage service. The State of Ohio legal age for possession or consumption of alcoholic beverages is 21 years of age.
If you're discreet and responsible, you can drink at your campsite.
Technically still against the rules, but I've had rangers walk past me when I waved with a beer in my hand because he was on his way to toss out some rowdy kids who weren't discreet or responsible.