should I go over on time for a party

@siaosong (165)
United States
July 10, 2010 7:24am CST
I have a question about attending a party that if I should go there on time. One of my friends told me if the party begins at 3:00, I'd better go there a bit later than 3:00. today I found from a website that I should go at 3:00. Could you please tell me which one is right?
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