I was able to add/enable International Day Pass to my new unlimited plan and free North American roaming . I switched from a grandfathered unlimited which did not accommodate those options.
We are currently at three phones and would like to add an iPad, but was told by the rep it would not count as the free fourth phone. The device rates on ATT unlimited are very lackluster and not competitive ($40/tablet

). Would be nice to have everything under one bill but for now it is just way cheaper to buy passes via the iPad system.