I had the Adidas $20 off $100 amex offer. Bought some shoes and clothes. It was easily over $100, I got the email saying i used my amex offer.
I did notice that Adidas ended up doing multiple charges instead of 1. I assume it is like Amazon, and they had shipped from different warehouses and charged each one separately. This ended up with have 2 charges in the around $92 which is under $100. I assume Amex knows this stuff happens and I should be good?