Hello, 20 days before, we have the obligation to inform with sufficient time in advance that the event changes its place of representation (and is out of our control) because if you disagree about doing the activity or not and it cancels, we keep the tickets, and That is why it is important to notify in advance and we did it, they decided to do it and continue with the reservation, we informed that it is outdoors and at the top of the mountain where the Chapultepec Castle is, we were there to assist you and provide a transportation service inside and wait for them outside for their return.