$66 million dollars
Most of us on this board are thinking of ways to do this but we are looking at it all wrong. This movie was made in 1985. In 2013 $30 million is roughly $66 million.
The question becomes, how do you spend over $2 million a day for 30 days and not accumulate assets. Seems damn hard to do to me. Even if you rented out things and had really lavish parties and all that, you probably wouldn't be anywhere near $66 million without assets and getting value for your money.
But I guess that is the whole point of the movie- its really hard to spend money, get value and not accumulate assets.