Complex sentence: The Fair had a hiatus year in 2010, after much local controversy over behaviour of some attendees and police funding, and was restructured with a perimeter fence and limitations on taking alcohol onto the site introduced.
Split into simpler sentences: The Fair had a hiatus year in 2010, after much local controversy over behaviour of some attendees and police funding. It returned in 2011 and was restructured, with a perimeter fence and limitations on taking alcohol onto the site introduced.