Hi JemmaB!
Do you really need to package the file at all? Can you not send a print-ready PDF instead? Your print vendor should be able to provide you with settings compatible with their processes.
You don't need to outline fonts for a PDF, as a subset of font outlines are created in the PDF; this is within the license terms of the vast majority of font vendors, and Illustrator should warn you if that is not possible. I've only ever come across one font that did not allow this, so then had to create a copy and actually outline the text in Illustrator. I'm aware that the word outline/s is used many times in that answer—apologies for that—but the instances in bold, refer to actually outlining your text in Illustrator, whereas the italic instances are made from the font itself, by Acrobat. I hope that makes sense.
🙂
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