Hard Rock Halloween 2019 San Diego Promo Code Are you looking for the best and most exciting Halloween Party in San Diego?  Look no further as Hard Rock hosts the craziest Halloween Party every year and you can join in on the fun with Hard Rock Halloween 2019 San Diego Promo Code 'NOCTURNALSD".  This year will be even better with San Diego's hottest people and some of the best music artists around.  Don't miss out…