Good afternoon, Englishquestion.
(1) Usually we use "for" if we want to indicate the PURPOSE (reason):
Tom: WHY are you going TO New York next week?
Martha: I am going TO New York FOR my friend's wedding.
Tom: Will you be in New York for a long time?
Martha: No. I'm just going TO my friend's wedding, and then I shall
immediately fly back home.
Pamela: WHY do you go to that place every Friday?
Ralph: I go TO that place FOR karate lessons.
Pamela: Are you leaving now?
Ralph: Yes, I am going TO my karate class now.
Mr. Smith: Are you coming TO Rachel's wedding next week?
Miss Jones: No, I'm not. I was not invited!!!
Have a nice day!
Student or Learner