If I'm understanding your question, you are wanting to possibly do room only for the first night and then have a package (
free dining, if offered) starting the next day and you're asking if your park tickets can be picked up prior to the start of the package? If so, then yes, park tickets can be picked up 3 days prior to the start of a package. If the room only and package are at the same resort, I think the park tickets can be done at the resort (although I'm not 100% sure). Otherwise, you would need to go to any park's Guest Relations office and request early ticket pick up. We did this in December 2010 and it worked out great. All I needed to show was a picture ID, but others have reported needing their package confirmation number, so have that with you just in case. Also, if you book the same resort/room type for both reservations, have the CM link them together and put in a request to keep the same room. This will not guarantee that you will not have to move, but they will do everything they can to keep you in the same room. Good luck.