One of the bigger differences I've noticed between the two....especially with the latin dances, is the latin motion. In American Rhythm, we step onto a bent knee. It's interesting trying to dance say, Rumba, with my friend who teaches Intn. Style.
I do have one question about this ( I posted a message about it). In International Rhythm, is the frame used the same as smoooth or standard dances? It's something I see at the International studio I visit, and I catch myself wanting to correct it, but not sure if I am in the wrong.