Depends on the production. We didn't even have Paris in the play – that I recall – when we did it at college. And Lady Montague didn't have a death, she was just sad at the funeral.

A play that encompasses the entirety of the original would likely take 3 hours to perform. There's a lot of fat to trim for individual presentation and interpretation (even once saw a Gaza / Israel variant one of my costars was in, that was interesting).