But SCOTUS left open everywhere but the home in its ruling, leaving it to other courts to define 'sensitive' areas. The 9th cut the places you can carry greatly without special notice to 'sensitive' areas.
How is a fairground 'sensitive'? If that can be ruled off-limits, so can anywhere.
To that extent, I agree with you. The percieved versus the true legal effect will have the grabbers trying to infringe on percieved beliefs. It will also put us in a position to challenge them.
To a reasonable person, such areas might include those where 'conflict' may be reasonably anticipated such as: Court rooms, sporting events (sadly), legislative houses, etc. Certainly parking lots would not make the list, nor would churches, schools, restaurants, or bars.