Short answers, pulled from the story.
The world premiere of Prokofiev's Romeo and Juliet, Op. 64 took place on the 30th of December 1938 at the Mahen Theatre in Brno, then in Czechoslovakia. It was a single-act production using music mainly from the first two orchestral suites. The Soviet premiere followed on the 11th of January 1940 at the Kirov Theatre in Leningrad.
Galina Ulanova danced Juliet and Konstantin Sergeyev danced Romeo in the 1940 Kirov Theatre production. Robert Gerbek played Tybalt and Andrei Lopukhov played Mercutio. The choreography was by Leonid Lavrovsky.
The ballet's original happy ending, which departed from Shakespeare, provoked objections from Soviet cultural officials. The Bolshoi's staff was overhauled at the direction of Platon Kerzhentsev, chairman of the Committee on Arts Affairs, and production was postponed indefinitely. Pravda's 1936 denunciation of Shostakovich and other artists including co-librettist Piotrovsky likely contributed to the delay.
Prokofiev included a tenor saxophone, a cornet, a viola d'amore, and two mandolins alongside the standard orchestral forces. The mandolins were chosen to add an Italianate flavour. The percussion section also calls for maracas, a glockenspiel, and a chime tuned to A.
Rudolf Nureyev created the production for the London Festival Ballet, today's English National Ballet, in 1977. Eva Evdokimova danced Juliet in London and Paris, and the production was staged by La Scala Theater Ballet in 1980 and the Paris Opera Ballet in 1984. Its most recent ENB revival at the time of recording was in 2010, staged by Patricia Ruanne and Frederic Jahn from the original cast.
The original score, reconstructed from Moscow archives by musicologist Simon Morrison, received its world premiere on the 4th of July 2008. Mark Morris created the choreography, and the Mark Morris Dance Group performed it at the Fisher Center for the Performing Arts at Bard College in New York state. The production then toured to Berkeley, Norfolk, London, New York, and Chicago.