How to dangle 50m in air and eat dinner at the same time

How to dangle 50m in air and eat dinner at the same time:
There is dinner, and then there is dinner in the sky. Dinner in the Sky originated from Belgium and it has since infiltrated close to 40 other countries. The basic idea is to get a massive crane from which a restaurant platform suspends perilessly in mid-air, 50m above ground, while guests strapped into their seats clink glasses and have their noms in the sky.