"A week prior to the flight, the operator/owner is most likely going to open a bid and sell it to the 'most-generous'", Mehdi Dialmy, Head of the Flight Department, told Thrillist in an email. "A day prior to the flight and without having sold the flight... the operator would pretty much accept any decent offer for a private jet flight!"
Of course, an empty-leg flight only goes one way, so you'll need to make your own way back. But your flight there comes with all the perks of being rich, including more space and privacy. As for food and drink, though, there's plenty on board, and you can even put in special requests.
But, according to Dialmy, the main perk is time.
"The check-in time is only 20-30 minutes before take-off", he said. "If the passengers are late, the plane will wait for them... It's their jet after all!"