I'd have more issues with the no campfires policy (if that is the policy) than the no alcohol. To me, a campfire is a vital part of the camping experience.
As far as alcohol, we go to a couple places where it is "prohibited". And all Colorado State Parks limit alcohol to 3.2% only. But the only time I have ever seen anything enforced on that was one time when the ranger stoped and asked us to move a bottle of hard alcohol off the top of the picnic table and onto the ground where it "wasn't obvious". Seems more of a tool that they can use to crack down when necessary, than an actual prohibition.