I can only share personal experience here.
I think the last time we purchased the
DDP, which has been several years ago, we were at T-Rex for lunch on our departure day...my wife, son, and me. We wanted to get the chocolate extinction dessert, and were told no, because that dessert requires 4 people's dessert credits (which it does say "for four" on the menu). It's virtually the same dessert as the sparkling volcano at Rainforest Cafe, which is "for three", and requires 3 dessert credits to order...which we had earlier in the trip...just a slightly different presentation.
So, from personal experience...not "I've heard" this or that...they can be fairly rigid on the "for two...etc" wording on the menus. Never hurts to ask, though.
That said...I do not believe the bread service app at Sanaa has the "for two" etc wording attached to it. We had dinner there two months ago, and although we don't do the dining plan, that kind of thing usually catches my eye.