One of my favourite drinks to have from Starbucks. The regular Strawberry Acai with Lemonade (important to include lemonade! The regular only has the juice concentrate and water) is a go-to. But once you add peach juice, it takes it to a whole new dimension of sweetness and fruitiness!
It's very sweet, so a venti is plenty enough to throw in the fridge and drink over a day or two. And it does have a bit of caffeine to give you that kick!