And you really shouldn't be parking at BW in order to avoid paying to park at the S/D. Park at DHS and take the boat there, or walk.
The S/D pay Disney for whatever perks they want to offer their guests. So far, you can get EMHs at the S/D, you get the buses and boats, you can have packages shipped from the parks. But no
DDP, no DME, no booking FP+ 60 days out. And yes, they charge for parking at their resort....no matter who you are. If you eat there, you can get parking validated, but that's pretty much it.