Hard Rock Halloween 2018 Promo Code "NOCTURNALSD" Gaslamp San Diego The San Diego Hard Rock Hotel is having another Hard Rock Halloween 2018 Promo Code "NOCTURNALSD" Gaslamp San Diego  event in downtown. -- USE PROMO CODE "NOCTURNALSD" at https://nightout.com/events/2018-a-halloween-odyssey/tickets?utm_campaign=nocturnalsd-22&utm_source=Custom+Tracking+Link Make sure to stop by here for your promo code as soon as tickets go on sale, Halloween and NYE and hardrock typically sell out. If you buy now and use our discount coupon for this sale you…