We have stayed at both and liked them both. The boat ride to MK was nice and very convenient. There is also a both that goest to the CR and FW from WL.
I think to save $750.00, it would be worth the change from Poly to WL. That pays for a lot of the tips.
Or, have you considered downgrading to the regular
DDP and then using the $750.00 to cover the additional meals, that you would not be getting via the deluxe?