I just watched them make my drink. They used a separate container to mix my iced drink before putting it into the cup. I specifically ask for light ice or most of the cup is full of ice(I do not know how that affects actual volume due to tapering + not filling to brim). I know this because I have a tendency to drink too fast and that’s how I noticed when I have a half a cup of ice left over, And why I ask for light ice now.
I do think it’s a rip off but not everyone drinks the same way and the cold cups are different volumes as well, possibly to offset the use of ice
You cannot tell If there is any sugar or sweetener of any kind in that drink, however statistically likely it has it or not.
Secondly if that is a cold brew coffee which is what it looks like to me, you are absolutely incorrect. Cream isn’t milk, and it makes a coffee look exactly like that. Most non dairy creamers also look the same way. Almond milk in my experience is a bit thinner and is more like actual milk than cream or oat milk, but still that cup looks like it is mostly coffee and ice