Yeah you're not going to get around the permit costs. Any government-ish owned property will likely require an alcohol permit through the ABC commission. Some private venues that don't outright sell alcohol but rent space will also require it.
I think when my wife and I had a rehearsal dinner in downtown Durham at a rented venue a few years ago, we had to get a permit ourselves for $100-200 for it if I remember right. We only did catered wine and beer, would have been way more if liquor was involved too.
Here's a list of all permit types and fees broken down:
https://abc.nc.gov/Permit/Types