And there is no WiFi--free or otherwise--at AKL. WiFi at WDW only is available in the public areas of the convention resorts and, as noted, not for free. AKL does have wired Internet service available in guest rooms for $9.95 per 24 hours. If you want, you can bring your own router and set up a WiFi network in your room so both daughters can connect at the same time. It's still going to cost you $9.95 per 24 hours, however.
Some guest buy the service every other day to save money but time it so that there's at least part of every day where they have service. If you log on at noon one day, for example, you will have all of the rest of that day and the following morning for $9.95. Then you can skip a day and log on at noon the following day.