Gender Reveal!

Nancy
Hi! Today I am 12 weeks pregnant🎉 I have an appointment in a few weeks to find out if my peanut is a boy or girl! My sister wants to come along and get the results and not tell me! So she can plan a gender reveal party. Should I go for the party and wait a few more weeks after having my scan or should I just know there at the appointment?!? I think I'll die if I don't know and someone else does!!!!