NEW DELHI: Prime Minister Narendra Modi has not changed his plan to open world famous guru Sri Sri Ravi Shankar's mega festival tomorrow on the banks of the river Yamuna, which has been shadowed by controversies over the massive environmental damage and reports of a shaky stage. Here are 10 developments in the story: Sri Sri's "World Culture Festival" was given the go-ahead by the National Green Tribunal yesterday with fines and conditions, amid concerns over the damage to the fragile ecology of the Yamuna flood plains. Sri Sri's Art of Living has to pay Rs. 5 crore as fine and pay for restoration of the area. The guru said he would appeal the decision: "We are not satisfied. We will appeal. Satyamev Jayate," he tweeted last night. The three-day event will feature yoga and meditation sessions, peace prayers and cultural performances. President Pranab Mukherjee has cancelled his attendance. Sources say PM Modi will attend "unless his office says otherwise". PM Modi is unlikely to sit on the giant stage that has been set up covering almost six football fields, after a civic team said it was wobbly and unsafe. A separate enclosure is being set up for the prime minister close to the gate. Security concerns were also put forth by the elite Special Protection Group that protects the country's top leaders. The tribunal noted that there is evidence that the "flood plains have been drastically tampered with, the natural flow of the river has been destroyed and reeds, grasses and natural vegetation on the river bed have been removed." A seven-acre stage has been set up for over 35,000 artistes and visitors from 150 countries. Many temporary bridges, ramps, mobile towers and a parking area are also being built over a 1,000-acre area on the Yamuna banks. Art of Living has told the court that it has spent Rs. 26 crore. A group of experts appointed by the tribunal had told NDTV that Art of Living must pay around 100 crores to undo the environmental damage. The green court was told that no permission was granted to the festival by the Water Resources Ministry, the police or fire safety. City planner Delhi Development Authority or DDA has been asked to pay 5 lakhs and firmly told that it cannot grant clearances like this in future. Facing opposition questions yesterday, the central government defended the event, saying "Sri Sri's intentions must not be questioned." Even Delhi Chief Minister Arvind Kejriwal said that "politics and controversies" should be "put to rest" after the court clearance.