Coming from California, this is just okay.
There is no option to customize your drink, and I wish I was able to. I ordered a basic black milk tea with tapioca pearls. The drink did not have a tea taste, was overly sweet, and thick (some may like this thick, creaminess from the milk - For me it was a bit much).
It isn't a "bad drink". If you enjoy sweet, creamy drinks, this is the place to go. If you prefer a stronger tea taste that is less sweet, keep looking!