I just read probably one of the first reviews in a German deal sites. It seems like everything went smooth besides the flight being canceled but the person got rebooked into the next flight. I hope im allowed to quote him, I run the German text into chatgpt as its quite early and a lot to translate by myself:

"Good morning everyone, I'm currently in Huaraz. The tour had a few hiccups. I flew from BER at 11:45 to MAD. From there, I was supposed to continue with LATAM at 00:55 and spend the afternoon in Madrid. (Tip: various museums are free on certain evenings). As I entered the Prado, it dawned on me that the information on Tripcase wasn't a mistake, but that the flight had been canceled. Apparently, the same plane with a different flight number was scheduled to depart the next day at 20:00, arriving at 2:00 am. Quick on my feet, I retrieved my luggage and booked an earlier Iberia flight at 13:15, with the better Business Class as described here. This option wasn't available before. We were then accommodated at the Axor Hotel with vouchers for dinner, breakfast, and lunch, which I could skip since I headed to the airport early to spend time in the Velazquez Lounge at Terminal 4S, which, by the way, was fantastic. The other passengers staying on the LATAM flight had to wait until 4:00 pm. The hotel was elegant but somewhat like a luxury prison in the middle of nowhere. The flight was fine, although the large screen could have had better resolution. Now, I will try to claim €600 through the passenger rights. Miles haven't shown up for me yet, despite multiple inquiries to ensure the correct number was registered. However, they say it might take up to 14 days. Generally, no issues with cancellation due to pricing errors, etc. I'm surprised that it worked out well in that regard."