if your not going to contribute
Don't you mean: If you're not going to contribute? Otherwise you're implying that "not going to contribute" belongs to Russell Gulch...
Yes, GAR not required for France. But you need to send the same form to customs NCU (email on the form) 4 hrs before arrival back. I normally just email the GAR to SB/NCU at the same time 12hrs before to CMA !