Or can they? Romeo & Juliet is too intense, too violent, too sad, too sexual. Certainly 7 and 8 years olds will act all juvenile about it (Butt soft, what light through yonder wind I break-Monte 38 years old). But these kids can do it and you can see them for free. 

https://soundcloud.com/939theriver-1/young-shakespeare-players-easts-romeo-juliet