My local Occupy lasted about 3 weeks. They jumped through all the hoops, talked to the PD, got permits and what not and then set up their tents in a downtown "park". The park was really more of an alley which became a wind tunnel in any kind of weather. A fair number of Occupiers stayed overnight and the city even kept the lights on for them. So things seemed to go rather smoothly for the first few weeks, with the group having their general assemblies each night and all. The Occupiers were even credited with thwarting a break-in at a nearby store during the wee hours - they called the cops who nabbed the "perps".
Eventually, our intrepid protesters decided that their first official "action" would be to try and persuade the city's common council (like a town board) that they should move the city's bank accounts from a commercial bank to a credit union. So they went down to the meeting prepared to speak, and there was an immediate disagreement as to whether they were even on the agenda (or something). Eventually, they were allowed to make a statement and as one guy (in particular) was doing so, the rest of the CC carried on with the minutiae of their positions, rustling papers, whispering to each other, and generally ignoring the speaker. (The Occupiers put up a video of this the next day and I agree, the common councilors were being quite rude.)
Eventually this speaker had enough of the CC's rudeness and launched into a diatribe, giving them hell. One of the councilors said he felt threatened. Needless to say, the Occupiers were escorted from the meeting pretty quickly and that night, the city literally turned the lights out on them. The next day they were told their Occupation was over (and by then their number had dwindled considerably). Still, they couldn't resist saying nasty stuff about the city, the councilors and the police on their very public FB page so when they asked for a reprieve, of course the city said no.
Last I knew they were still meeting once a month or so in a restaurant somewhere.