Signs in Del carry no weight. CC means CONCEALED, so they should never know.
But it is also up to you, if they do not want to honor your 2A rights, you can take
your $$$ somewhere else.
As far as the RESTRICTED places, home or car. If I was going to hide it in the car,
I'd do so BEFORE I get into the parking lot. Dont know what fine citizens are watching
for people to secure stuff in the back of the vehicle.