EXPECT DELAYS; DELAYS; WITH SIX FLAGS GREAT ADVENTURE THEME PARK AND WILD ANIMAL DRIVE THROUGH SAFARI OPEN FOR SEASON THEME PARK OPEN FRI; 10:30 AM  9:00 PM, SAT; 10:00 AM  9:00 PM, CLOSED SUNDAY; SAFARI OPEN 9:00 AM   4:00 PM FRIDAY, SATURDAY, AND SUNDAY .