Funtown Family-Center's 30,000-square-foot facility echoes with the shrieks and hollers emanating from kids as they careen across the gleaming hardwood ellipse of the roller rink or beneath the black lights of the laser-tag arena. An inflatable obstacle course and indoor playground quarantines hopping youngsters in between cafe-fare feasts beneath beach murals. An arcade offers a selection of video games, and a personal hostess oversees each Fun Town party, helping wrangle attendees as they launch endeavors fueled by pizza and celebratory cupcakes.