Translation of sacrifice in Spanish

We drove to the hotel Rex where we made reservations in advance. However, once there, two American guys told us that they had a voucher from a travel agent and the price was like half of it.
I wish you would help me to improve my Spanish. I am studying law in Germany and I am trying to learn Spanish. I hope you can help me and I could help you to learn German. Have a great day.
The same afternoon (October 4) we took a flight to Arequipa, spearing a bus ride of 12 hours. Due to heavy winds we had a delay of 2 hours. We took off at around 4.30pm.