Can You Repeat That for Me?
One of the first things you should let the employee know is what size cup you want. Tell them immediately whether you want a tall, venti, or trenta. That way, they can start thinking of how to prepare your ridiculously long list of ingredients. It’s easier for everyone to get the cup size out of the way from the get-go.
But if you don’t, and if the OP has time to spare, they’re going to passive-aggressively punish you for it. They’ll let you ramble on and on about your highly specific order before asking what size you want that in. And if they’re feeling extra petty, you might have to repeat the whole thing over again.