marker lights on while camping

(Adding on to my above post) also at our seasonal site it has been asked many times if there is a way to make all the lights flash in an ER situations. In our park, roads are confusing with winding loops and many dead ends. Several fireman EMT types have said how nice it would be if something as simple as flashing lights to assist them finding your spot/RV. But none of us have sat down and actually thought out or installed some type of in-line blinker system yet.
Our current system of the guard meeting the ER unit at the front gate leaves a lot to be desired.