i made a similar statement abt it never staying below freezing all day. well...this year i had a day or two that did. i put a heater on the inside. we will see how i faired this spring. i drained it but didn't blow it out. i believe as someone posted last fall, the antifreeze would have been cheaper than the electricity.
never say never. u may want to use those valves next year.
this fall, when u consider witnerizing, check back, there should be many post on the proper way to do it.