Here are the documents you should take with you at the ceremony...PR card,Record of landing paper, two form of identification which can be health card and drivers license, they also ask for passports expired and present.. however i,m not sure how it gonna work for you because they also ask for the letter of invitation and the consent form that was send also with the invitation letter... because there is a number on the invitation letter that you will be seated according to that number ,and you have too sign the consent form ,to give the media permission to take pictures of you.. I wish you best of luck
just a suggestion why dont you print out the invitation from your e-case and take it with you..once again best of luck