Within your home, yes. Beyond that, no. ORC 2923.12
is the general rule prohibiting concealed carry. Without a license it provides a very narrow exception pertaining to "[a] person's storage or possession of a firearm, other than a firearm described in divisions (G) to (M) of section 2923.11 of the Revised Code, in the actor's own home for any lawful purpose.
" Emphasis mine.
Go get your ticket as soon as you can.
Never ask if you can carry at a non-posted place, but always ask why you cannot at one that is!
Just because they offer call ahead seating doesn't mean you call ahead for carry permission.