We can make 5% cashback only on the cryptocurrency wallet. Also you can read about it at FAQ on tetarise.com -- "They physically cannot accomplish this for one simple technical reason. The online platforms themselves do not interact with customers' credit cards. To give a 5% refund, they need to obtain credit card data, which in itself is a huge risk.
However, the question itself is the next step. Let’s imagine a client from China has booked a room in a Prague Hotel for 50 euros. The reservation service must return 5% or 2.5 euros to their card. The transaction cost plus overheads can be several times higher than this amount.
At the same time, TetaRise does not bear any costs, except for the transfer fee from one cryptocurrency wallet to another. The wallet itself is tied to its personal online Back Office, automatically receiving a refund, after leaving the hotel."