Facebook stock prices may be plummeting, but Mark Zuckerberg has other things on his mind these days. The Zuck and Priscilla Chan are enjoying the newlywed life on their European honeymoon, though not in the way you might expect from a young billionaire couple.

That’s Mark and Priscilla taking a stroll on the Amalfi coast, and as usual the Zuck looks more like a college kid backpacker than a global tycoon. While he may be worth an estimated $17 billion (at 28) Mark made things official with Priscilla in a quiet backyard ceremony, and he appears to be keeping things equally low-key on his honeymoon. It’s refreshing to see such humility from such an accomplished dude, but there’s a fine line between humble and boring. I’m gonna need Mark to pop some bottles and make it rain before I lose interest.

(Photos: Pacific Coast News)