How will romeo and benvolio get into party if they are montagues?

In William Shakespeare's play "Romeo and Juliet," Romeo and Benvolio attend the Capulet ball--not a party-- in disguise. Romeo wears a mask, while Benvolio uses a torch to conceal his identity. This allows them to freely enter and mingle with the Capulets and their guests without revealing their true identities as Montagues.