First of all, go to r/Starbucks.
Secondly, if you want two drinks then pay for two drinks. You get what fits into one cup.

Wrong subreddit.

YTA

We are taught to not give the customer more of the product. You paid for a venti frap, not a venti frap + a tall frap

Imagine having such disposable income you spend $15 on one drink then get mad that we don’t want to break policy when you’re probably rude and don’t tip.

A venti frap is 26 oz. You are paying for a 26 oz cup. Not any more. You are not entitled to anything except 26 oz of drink. You definitely sound like the asshole. You’re asking baristas to break policy. Take your venti drink and leave. If you want more, order a tall Frappuccino as well.

Sorry, you paid for a Venti cup, a venti cup is 24 ounces- thats all you get.

The coffee is blended into the drink therefore it will be evenly distributed throughout. You paid for a venti Frappuccino, assuming it was filled to the top, you got what you paid for.

Girl with the amount of shots you're adding to it you might as well just get two separate drinks. You'd probably save money and get more bang for your buck. Also, we get annoyed when people aren't clear about their expectations for their drinks. We'd be more than happy to do some annoying shit if the customer is nice about it and is clear with what they want.

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To answer your question, yes you're the asshole. One you are asking minimum wage works to break company policy for you. Then you come and bitch about said works on a forum that only meant for the workers. And three the amount of punctuation and abbreviations you use, clearly shows you have an attitude about the entire thing. Every customer I've ever had that not only can't be bothered to read AND thinks they know how to do the job better then is always a major asshole.
Try asking for a latte blended with light milk and ice. When I make myself a blended ice coffee, I use a size smaller scoop and 95% will fit in the cup. It will be runny as hell as that many shots melt the ice in general.