It's a party. The purpose was to have a good time. And since they were having the party, it's a chance to get Paris and Juliet to meet.
Capulet did.
No Montagues were invited, including Romeo. Mercutio was invited, but he's not a Montague.
Juliet sends the nurse to Romeo to find out whether he really wants to marry her or not.
Romeo's infatuation with Rosaline causes him to crash the Capulet's feast where he first encounters Juliet. That's the best answer I can make from the vague question.
Immediately thereafter Juliet wakes up from her faked death.
The Capulets throw a big feast in Romeo and Juliet where Romeo and Juliet first meet and fall in love.
Romeo and Juliet first met in a feast at Capulet's house.
Romeo
Juliet recognizes Romeo's voice at the Capulet's feast.
at capulet's ball/feast.
Capulet did.
Romol
Lord Capulet throws a huge feast in "Romeo and Juliet" where Romeo and Juliet first meet each other.
No Montagues were invited, including Romeo. Mercutio was invited, but he's not a Montague.
Her express purpose is to make the wedding arrangements. While she is about it, she warns Romeo not to mistreat Juliet.
Juliet sends the nurse to Romeo to find out whether he really wants to marry her or not.
Romeo's infatuation with Rosaline causes him to crash the Capulet's feast where he first encounters Juliet. That's the best answer I can make from the vague question.