In our experience with the DDP (old experience, since we haven't used it since 2009), we were able to get the milk shakes and smoothies with the regular DDP and QSDP at all the places we asked, so the specialty drink part of the 2018 plan does not really seem like a bonus to me. The only specialties I've never seen eligible are the ones in souvenir cups or with glow straws/ice. So if they include those, it will definitely be a bonus.