The ONLY guest privilege that you do not get at S/D is the ability to charge park purchases to your room key. (You can charge purchases at the S/D complex to your room key, though.)
The theming is not so ubiquitous at S/D; it is cheerful and whimsical, but it is not all Mickey all the time--personally I prefer it that way. The toiletries are much better quality than the Mickey stuff; the oatmeal soap is wonderful on sun-stressed skin. There are free local-access DSL internet connections in the rooms. Beyond all that, there are the beds, which are comfortable beyond description.