We rated last year’s Operanation 9: “Sweet Revenge” as one of last year’s top events of 2012, so you should be marking the 10th iteration of Operanation as a must-attend. It’s a major fundraising event of grandiose celebrations for Toronto’s performing arts that brings over a thousand guests to fill three floors of the Four Season’s Centre for the Performing Arts, raising funds for the COC’s Ensemble Studio, the training program for aspiring young opera professionals. This year the Operanation…