I have an idea you might want to try. It doesn't help with Coronado Springs, but it might work for Wilderness Lodge.
You could stay at a 1-bedroom vacation home at the Villas at Wilderness Lodge. They are part of the Disney Vacation Club, or DVC, which is Disney's on-site time share program. The system is based on points which can be 'spent' on a vacation. Variables that influence point 'cost' per night are which resort (DVC property, normal Disney resort, or affiliate timeshare location off-property). People buy a set number of points which they can use each year on the vacation of their choice. After the initial purchase, you pay maintenance fees on points per year. One important point about points (no pun intended), weekends at DVC resorts are MUCH more expensive (point cost) than the weekdays. That said, many DVC owners and renters go from Sunday through Thursday, doing 5 day trips.
The thing is, some people don't use all their points each year for various reasons. So that they don't lose out on the investment, they often 'rent' these points out on the
DVC Rent/Trade Boards on these Disboards. You can sometime find a deal when someone is eager to get rid of points, or they're about to expire on them. If not, the going rate is currently $10/point.
A one bedroom villa is much larger (and I think nicer) than a std. room at a moderate priced Disney resort, with a full kitchen and living room. All utensils are there, and you can easily cook in one of these units. In a nutshell, they're like night and day to a normal room. They also include a pull out couch in the living room, so having 3 children is not a 'squeeze' like it might be in a normal room. You can also do laundry right in your room, as there is a washer and dryer. The one downside, if you call it that, is that you only get housekeeping once every four days.
If you go in the low season which is all of January, all of September, and the first two weeks of December, a 1 bedroom villa at Wilderness Lodge will cost 22 points per night from Sunday through Thursday, and 45 night (see what I mean) on Friday and Saturday.
What this means is that a Sunday through Thursday stay at this one bedroom in the low season would cost 22x5=110 points. At $10/point, you could 'rent' and pay some DVC member to make the reservation for you (involves some trust) for $1100.
The rack rates (cash rates) for Wilderness Lodge can be found
here . When you add 11.5% tax, a standard small room comes out to $1109.43, and a Lodge Deluxe sized room, which might be closer to the 1 bedroom villla, comes out to $2062.75 for the five days. When you rent points, you dont pay any tax.
We rented this May, without knowing what DVC was, since the deal was so good ($1650 renting vs. $3350 rack) and were amazed at how superior the DVC units were (we were in a 2 bedroom villa). They are Disney, just more 'home' oriented, than 'hotel' oriented. We were so impressed, we bought in. That's not what I'm trying to suggest, just that you might be able to save some money, and be more comforable, right in Disney, without having to be cramped if your son can make it.
If you want to go some other time, check the
point charts for Wilderness lodge
here.
Good luck, I hope you have a great trip!