I will be making the NFSC with icing for 100 people soon and wanted to know how far in advance I can make them. Does the following sound ok?: Make cookie Thurs, ice Fri, bag Sat and party on Sunday, Thoughts?

I'm not familiar with that specific recipe, but from my own experience with sugar cookies and from hearing other's experiences, that sounds like a good timeline. Once the the icing has dried, just keep the cookies in an airtight container-tupperware before they are packaged, and then obviously in whatever you package them in.

When I put my cookies in tupperware before I package them, I stick a piece of bread in with them, the cookies absorb the moisture and stay/get soft.

I made 250 NFSC last week and that should be fine. I baked sun and mon then decorated tue, wed, and Thursday and packaged when they were dry. I used marshmallow rolled buttercream and antonia 74 royal icing.

Thanks!