Hi ladies. Just got back home and I’d like to share my experience. There was no customs desk at Gare de Lyon but customs officers came on board before crossing from France into Switzerland. They had the stamp with them and kindly offered to help me mail off the envelopes
And just as well. Our GVA-FRA flight was horribly delayed and we ended up with only a 1 hour layover instead of 2 hours. We had to run to catch our FRA-SIN flight so there was no way we could have gotten the tax refund done in Frankfurt.
Keeping my fingers crossed we will get our refunds soon!