The light up drinks with glow cubes - never.
The smoothies, milkshake, & virgin variety of drinks vary from restaurant to restaurant. Even different servers seem to have different rules within the same restaurant. We've gotten smoothies every year in the past at Coral Reef with the DDP, and were told "No way" this year. Came back to the boards, and seems that everyone else got smoothies at CR recently with their DDP credits. Not a big deal to me either way - I look at it as a bonus if it's allowed.
It's not something I would look forward to as a certainty. Disney is known for changing the rules whenever they feel like it, so restaurants could be giving out specialty drinks now, and tomorrow they will have been told by management that they can't anymore.