The Gretna Heritage Festival takes place the first weekend of October starting at 4 p.m. Friday, October 3 and at 2 p.m. on Saturday and Sunday. The festival is always an interesting mix of local and classic entertainment, and this year’s no different. Galactic, Terrance Simien and Bruce Daigrepont are joined by KC and the Sunshine Band and many more on Friday. Classic rock heroes Blue Oyster Cult and Foghat headline Saturday, along with Allen Toussaint, Theresa Andersson and OffBeat’s Septem...