Originally Posted by Duke787

I've also stumbled across the odd duty free that has this restriction on alcohol but is happy to sell the other products (e.g., mainly beauty products) to domestic travelers. I think this is the case at smaller airports in particular like my home airport, RDU, which makes sense given there are only 2 daily international flights (with some additional seasonal international flights sprinkled in to KEF, CUN, and NAS) so they aren't seeing significant volume on a daily basis