Mothers Jenni Woodley (far left) and Rose Marble (third from right) brought their kids from Belmont.
"It's beautiful weather," Marble said. "They like stacking the cups. They're getting a bit of everything."
Woodley's daughters, 5-year-old Halle (second from left), and 3-year-old Peyton (bottom), helped Marble's daughter Lilah (second from right) and son Joshua (center) stack cups while 6-month-old Nathan Marble looked on.
Boston.com correspondent Photo / Sopan Deb