Hi, Colleen!
If you'd like to get a better idea of where your two resorts are, not only in relation to each other, but also to the parks themselves,
take a look this map of Walt Disney World, which includes all of the resorts and parks on one map. (This will give you a better visual for what I'm about to explain.)
In addition to meeting at a park, you have some options should you wish to head to each other's resorts instead. Both of your resorts, Disney's Coronado Springs as well as Disney's All Star Movies, are in the Animal Kingdom resort area. This means that your commute time may not be as long as if you were, literally, on opposite ends of the World! Either of you could take a bus to DIsney's Blizzard Beach Water Park / Disney's Animal Kingdom and get off at the first stop. Once off the bus, head to the bus line for the other family's resort. It will add an additional leg to your journey, but it
will get you there.
Of course, there are always cabs available to take Guests from one resort to another, but the method mentioned above (and previously) will get you to and fro without having to spend any additional money.
I'd love to answer any more questions you may have as you think of them, so please continue to send them! You know I love it!