Train from Luoyang to Xian April 27, 2016

There are 9 of us from Canada that plan to take rail from Luoyang to Xian on April 20, 2016. I understand that the tickets will be available 60 days in advance. If we purchase on TCG, I suppose that we can choose the self collection option and then will be given a pick up number. Can we pick up them at the Luoyang Railway station on April 16 or 17? All we need to pick up them are the pick up number and the Canadian passports? Thanks.