Romeo spends the night with Juliet before he gets banished. They spent their last hours together before Romeo is forced to flee from Verona.
Romeo will stay in Mantua while he is banished from Verona. He flees Verona after being exiled by Prince Escalus for killing Tybalt. The Friar arranges for Romeo to stay in Mantua until things calm down.
Juliet struggles to accept that her husband has killed her cousin and is forced to decide who she would remain loyal to. Eventually, she decides to forgive and stay loyal to Romeo. She then sends to the Nurse to Friar Lawrence's cell to make arrangements for Romeo and Juliet to have their wedding night together before he leaves for Mantua.
If she hears a lark, it must be dawn (that's when larks sing) and she and Romeo must part and he must get out of the city. But if she hears a nightingale, it must still be night (that is when nightingales sing) so they can cuddle some more. Naturally that is what she would prefer.
Romeo is banished to Mantua after seeing Juliet for the last time. He cannot stay in Verona due to the Prince's orders following the altercation between himself and Tybalt, leading to his exile.
"Stay" in Romeo and Juliet means to wait or remain in a specific place. It's like when your annoying friend won't stop talking and you just want them to stay put for a minute. So, when Juliet says "Good night, good night! Parting is such sweet sorrow, that I shall say good night till it be morrow," she's basically telling Romeo to chill out and not leave just yet.
it stays hot but gets cold at night
She tells him that the bird they hear is not a lark (a morning bird) but rather a nightingale (a night bird).
You are referring to the scene where they wake up on the morning after their wedding night. What makes Juliet change her mind is that Romeo agrees with her. She is fancifully saying it's not really morning and he can stay a bit longer, and that's ok when it's wishful thinking. But when Romeo says that he WILL stay a bit longer, suddenly she realizes that she had better be careful what she wishes for. If Romeo stays too long, he will be captured and put to death, and she doesn't want that. What she really wants is not for him to stay until he is captured but for him to go and avoid capture.
Tybalt is important because he is the foundation of the story; without him there probably wouldn't be a story. If Tybalt hadn't have fought Mercutio and killed him, Romeo wouldn't have killed Tybalt in return, and therefore wouldn't have been banished. If Romeo wasn't banished, he would be able to stay with Romeo and Juliet and they would not have died in the end. So you see, it is like the domino effect.
Capulet allows Romeo to stay at the party because Tybalt does not recognize him as a Montague. In addition, Capulet does not want to create a scene at the party by causing a confrontation with a guest, so he chooses to let Romeo stay and enjoy the festivities.
Romeo and Juliet's problem is that they are in love but their parents don't want them to marry or stay together.
no cuz I am stay away