Normally you cannot stack discounts. So if you go for free dining, typically you must pay full price for the room. Most packages available don't really offer any additional discounts beyond what you can get yourself by buying it all seperately. And you may pay more since you can do things like use a room discount PIN, and then buy your tickets from a reseller. Packages may offer other perks like a free photopass picture, arcade voucher, boat rental, etc. Ask em both to quote it out and see what it will cost. You can do AAA room discounts directly through Disney, but as I mentioned before, typically you cannot stack that with free dining. Typically I believe they are 10-15% off rooms.