I love India Coffee House(s.) They’re inexpensive, they’re retro, and they’re consistent. With the uniforms and the decor, it’s often like stepping into the 1950’s–and the prices seem that way a little bit too.
In Bai Tu Long Bay there’s floating Pearl Farm with a built-in jewelry store. It’s a little strange browsing jeweler’s cases with a bunch of people in life-jackets. On the way into the store they show you how pearls are cultured and harvested, presumably in an attempt to engender a sense of gratitude / reciprocity from those who are really psyched about it.