Most stores won't put it in a trenta cup as we're not allowed to put Frappichinos into trentas. Other than that, make a smoothie at home tbh

just make a real smoothie at that point lol

Just why? Why are you making an easy frappuccino into something so complicated?

Genuine question, but why in a trenta cup? You aren't magically getting more drink when they're measuring the ingredients for a venti. if anything you're probably getting less whip without the room in a dome lid.
Tbqh this sounds like a bit of a boring drink and not hard to make, it just doesn't make a lot of sense, and sounds like it's gonna cost you more money than it's worth if you aren't a partner using a markout. I'm surprised they let you put in the blueberries though.

U guys have raspberries? Where