I think the dealer already know, my salesman just called me that he want me to send him my PDF build sheet and copy of DL, then he could enter them on Thursday on their end to put the order in.
I think you could just go since when I checked in the one at Michigan, they only let me filled out a form and that is it. No one asked me anything or my reservation number.
I do not see why they will not let let you in.