Do I have right on information when something goes wrong with my flight (e.g. cancellation, delay or denied boarding)?

Yes. The operating air carrier shall ensure that at check-in a clearly legible notice containing the following text is displayed in a manner clearly visible to passengers: ‘If you are denied boarding or if your flight is cancelled or delayed for at least two hours, ask at the check-in counter or boarding gate for the text stating your rights, particularly with regard to compensation and assistance’.