I can't comment on the donuts (which is pretty ridiculous seeing as that's the main draw here), but I was satisfied with the boba smoothies. They're definitely not anywhere close to being great, but for someone who's not picky about boba, they're really refreshing. The boba itself was kind of mediocre, but it had a good flavour and wasn't too sweet. I got a taro smoothie and a honeydew smoothie.
The honeydew tasted surprisingly good for being from a powdered mix, it was just like drinking a fresh honeydew melon. The taro was even better, although the drinks were a bit too icy for me. They were a lot better after I let the ice melt a bit, but who wants to wait?