11/2009, of 6 July, on the administrative regulation of public performances and recreational activities: the organisers have the right to return to users or spectators the amount they have paid in the event that the show or activity is essentially suspended or modified, and to respond to claims for this reason that may be appropriate, in accordance with applicable legislation, except in cases where each of the users or spectators has been expressly and clearly announced that the organisers or owners reserve the right to modify the programme, or in cases where the suspension or modification occurs once the show or activity has begun and is due to fortuitous causes or force majeure.