
Okay..gotcha..two of the kids ar still under three..so you're in one room at POR.
Personally..it's gonna be very tight in a POR room for six people.
I'd go with the cabins. If grandma isn't going to the parks with you though, the dining plan is tough to use at the Fort. You can get food for the cabin though. The cabins offer a full kitchen, complete with dishwasher. If she's as active as you say, then she might want to take the internal bus to the Main themed pool area, and get a bite to eat there...or up front to the Settlement area and eat at the Trails End.
Just that the dining plan options are limited, when at the Fort. (They really need to put a food court in there, but that's another thread all together).
Now if she'd be willing to drive a golf cart..she'd have an easier time getting around.
I think the cabins can work nicely, especially with little ones. They have some freedom to roam around. As you do have a nice sized deck outside. Which is nice when the kids are napping.
In the evenings you can watch the fireworks over the MK from the beach at the Fort. There's also the nightly Electric Water Pagent that performs on Bay Lake. Not to be missed.
There's a new themed pool as well, with a splash play area for the little ones. Not to mentioned you have pony rides, that your five year old is sure to love. You do have bike rentals, and there is a marina for mousesprite, or pontoon boat rentals to use on Bay Lake. The MK is a just a water launch away. Given the ages of the kids..I assume you'll be spending most of your time there.
Oh, and if you can finances allow .the Hoop Dee Doo Revue, is held in Fort Wilderness, and is very entertaining, funny dinner show.
If you are interested in the cabins, you might want to take a look over at the camping forum here on the Dis. Lots of info, and folks who are happy to answer any questions you might have about FW.
