Punchdrunk Theatre Company- Sleep No More

This is kind of a twofold post- the first interesting venture being the theatre company Punchdrunk.  They are a British theatre company focusing on site specific work, which they curate for themselves.  In 2011, they took over three warehouses in NYC and turned them into The McKittrick Hotel, where they produce a theatre experience called Sleep No More. A wildly interactive show, the audience silently follows one or more characters of their choosing for a silent performance of Macbeth throughout the hotel and 2.5 hours.  The interesting part to me is that Punchdrunk is funded by Arts Council England and Esmee Fairbairn Foundation, but they do work all over the globe.  There is also a ‘support us’ page on their site, so I’m wondering how that works.  Also, how did they build the capital for the McKittrick Hotel?