Manatee Sleepover Party at Tampa's Lowry Park Zoo for up to 15 children and two chaperones. Come have a sleepover with the manatees and learn all about these gentle giants at the David A. Straz, Jr. Manatee Hospital. Party begins at 6:45 p.m. and lasts untill the next morning at 8 a.m. Pizza dinner and continental breakfast included.