No! The family does not know that Romeo and Juliet are getting married. But that is not the only marriage in the play. There is a planned wedding of Juliet to Paris. And that wedding the family does know about.
No, I wouldn't say they were. Juliet did defy her father by her marriage to Romeo, but that wasn't rebellious as we know it today. It was normal for young women to have arranged marriages to older men, but if there hadn't been a feud with Romeo's family her father may had consented to a marriage.
No she does not. Juliet's parents don't even know that she married Romeo
Romeo and Juliet's families hated each other. Romeo did not want her to know that he was a member of her family's hated family.
Juliet's nurse is also aware of Romeo and Juliet's marriage because she helped arrange the ceremony. Others that know of this are Friar Laurence, and, of course, the couple themselves.
Romeo tells Tybalt that he loves him before the fight goes down because not even a day before he had wed Juliet. Tybalt being Juliet's cousin would make Tybalt now his family. This is why Romeo says that he loves him. As back then loving your family was important.
Tybalt is a character in "Romeo and Juliet" by William Shakespeare. After Romeo and Juliet are married Tybalt becomes related to Romeo because Tybalt is the nephew of Lady Capulet who is Juliet's cousin.
The Nurse and Friar Lawrence knew about it before anyone else because the Friar performed the marriage and the Nurse was Juliet's close confidant so she told her everything.
Friar John didn't deliver the letter that says that Juliet is not dead because there was a plague in Mantua, where Romeo was banished to.
Juliet's father did not know about Juliet's marriage to Romeo until after her death. He was insisting on her getting married to Paris, not knowing that she was already married. And Juliet didn't want to tell him why she didn't want to marry Paris, which made him even more insistent.
Juliet asks the Nurse to find out Romeo's intentions regarding their relationship and marriage plans. She is eager to know if Romeo is serious about their love and if he plans to marry her.
Since meeting Romeo, Juliet idolised Romeo she loved Romeo enough to give up her family as seen in the ending where she took the potion that was given to her by the fairer. That was Shakespeare's way of letting the audience know how much in love Juliet was with Romeo that she was ready t leave her family. Juliet also became sneaky as to what she did and where she went, as well as going to the extent of fighting with her father and begging him not to get her married to Paris.
Friar Laurence hopes that if he marries Romeo and Juliet that the feud with their families with end. Little did he know that will not happen until they are no longer living.