Billionaire Mark Zuckerberg enjoys budget Hawaiian vacation with wife Priscilla

Sandals, burgers and picnic table lunches: Billionaire Mark Zuckerberg enjoys budget Hawaiian vacation with wife Priscilla - He may be worth $13.3 billion, but it seems Mark Zuckerberg still appreciates the simple things in life.

The 28-year-old Facebook founder has been pictured enjoying a low key vacation in Kauai with his Harvard-educated doctor wife, Priscilla Chan, on their latest trip to Hawaii.

But rather than indulging in the lavish dinners the couple can no doubt afford, they have been seen chatting with friends at picnic tables while snacking on Kauai's famous Bubba burgers and smoothies.

The couple, who are notoriously down-to-earth, sported casual wear and Mark wore his now-famous sandals, which are parodied by Jesse Eisenberg in the film about Facebook, The Social Network.

Newtworking: Mark Zuckerberg and wife Priscilla Chan chat with friends as they take a stroll on Kauai 

Relaxed: The couple were seen enjoying food from Bubba's Burgers at a picnic table with friends

The billionaire formerly said he would only eat meat he killed himself, but it appears he makes an exception when he's on holiday

'We try to stick pretty close to what our goals are and what we believe and what we enjoy doing in life - just simple things,' Chan has previously told The New Yorker.

As the couple headed to their beach front house, they were seen walking past Shave Ice Paradise - a favorite of the Obama family when the First Family vacations in Hawaii. 

It is just the latest trip to Hawaii for Zuckerberg and Chan, who switched web surfing for wave surfing in Maui last December. They were seen chatting with beach goers and enjoying lessons in the water.

And while the couple do not appear to be splashing out this trip, it was reported that Zuckerberg did go on a spending spree in the area in January, when he bought several luxury condos in Honolulu.

Stroll: Zuckerberg and his wife laughed as they passed Shave Ice Paradise - an Obama favorite

Taking it easy: The couple, who enjoyed smoothies with friends, also visited Hawaii last December

Vacation: The high-flying couple is staying at a beach house Kauai, Hawaii, pictured

He was reportedly interested in buying several units in a 23-story ultra-luxury condominium under development. Each unit costs $1.6 million - with penthouse suites reaching $9 million. 

The couple met at a college party in 2003 as they stood in line for the bathroom at Zuckerberg's Jewish fraternity at Harvard University, Alpha Epsilon Pi.

'He was this nerdy guy who was just a little bit out there,' Chan told the New Yorker.

They married in May last year in Zuckerberg's backyard in Palo Alto, California - after telling their unwitting guests the celebration was solely to mark Chan's graduation from medical school.

As well as family and friends, they were joined by their dog Beast and serenaded by Green Day's Billie Joe Armstrong.

Partying: While Zuckerberg enjoyed a low key holiday, the Winklevoss twins, who sued him for allegedly stealing their idea to create Facebook, were seen partying at Coachella music festival

While the couple were seen taking it easy in Kauai, where they are staying at a beach house, the Winklevoss twins - who sued Zuckerberg for allegedly stealing their idea to create Facebook - were seen partying with women at the Coachella music festival in California.

Zuckerberg was no doubt ready for a holiday following his first foray into politics this month. 

With other Silicon Valley leaders, he launched a political group aimed at revamping immigration policy, boosting education and encouraging investment in scientific research.

Zuckerberg announced the formation of Fwd.us (pronounced 'forward us') in an op-ed article in The Washington Post two weeks ago.

Low key: Zuckerberg was seen sporting his sock sandals - which were parodied in the film about Facebook, The Social Network, by Jesse Eisenberg (right) who plays the Facebook founder

Wedding day: The couple were married last May at their Palo Alto, California home

In it, he said the U.S. needs a new approach to these issues if it is to get ahead economically. This, he wrote, includes offering talented, skilled immigrants a path to citizenship.

'We have a strange immigration policy for a nation of immigrants, Zuckerberg wrote. 'And it's a policy unfit for today's world.' ( dailymail.co.uk )