Surge Guard w/ ? Power pedestal - how do you handle this?

Always trust your power monitor and learn how to check the power at the pedestal yourself.

A few year ago at an Oregon State park our travel buddies plugged into the park 30 amp power. Surge guard would not connect showed reverse polarity. Park people did not believe it until I showed them.
They rewired it problem solved. This pedestal must have been this way form the start.

As for Campground electricians that's got to be a joke.
Show me one who has any kind of formal training in the electrical field.