You have to disconnect the golf cart batteries anyway - in a golf cart they are all wired in series for 48 volts. Need to re-wire as pairs for 12V for the RV.
Not many people have a way to carry a gold cart, but I have seen a few. Don't know if those few ever used the batteries as reserve power, since I saw them in RV resorts rather than a boondcking scenario.
Former owner of 2004 American Tradition and several other RVs
Home is West Palm Beach, FL