One thing to seriously consider for AP holders who can go during the late August to October period when the MYW dining plan is free. This was pointed out on Mousesavers.
You can get a package for say, seven days, and only by a ticket for one day. So you use your AP and get the free dining plan for the entire trip. You can compare this against whatever AP hotel discount you would get if you didn’t get a package.
Remember, a family of four with two children older than nine, would get $140 of free meals with the free dining plan, which might be better than the AP resort discount.