Can someone other than the couple pick up the marriage license (before the wedding) when it is ready?
Yes, after the bride and groom have applied for the marriage license, someone other than the bride/groom can pick it up when it is ready. This is the document that is needed before the wedding. However, whoever picks it up is responsible for reviewing the license to ensure all info is correct.
Once the license is sent to the health department after the ceremony, the bride or groom can pick up the marriage certificate when it is ready. If someone other than the bride/groom comes in, they can only get a partial copy of the marriage certificate and the partial copy is not what is needed to change documents.