FORT LAUDERDALE, Fla. — Marjory Stoneman Douglas High School promgoers walked into an enchanted forest Saturday night. The main ballroom at the Westin Fort Lauderdale Beach Resort was decorated with “trees” and green thickets. Actors disguised as forest creatures, wood nymphs and deer scampered about as the 850 students came to step away for one night from the horrific event that rocked their young lives. Each table had a floral centerpiece more than 4 feet tall.