300+ guests are expected to trade in their black-tie attire for “tropical chic” and attend the annual Pineapple Jam on Saturday, May 7 at The Main Las Olas, 201 E. Las Olas Boulevard in Fort Lauderdale benefiting the Historic Stranahan House Museum’s educational and historic preservation programs. The party gets started at 6 p.m. with cocktails, live musical entertainment and Floribbean cuisine.