Does the conference fee list have to be printed from the hotel system to be reimbursed?

At the hotel front desk, when you check out and settle the bill, the hotel front desk staff will provide you with your accommodation list to confirm the cost. After you sign, you can ask for a copy and an invoice. Unless you live in a very low-end guest house, there will definitely be one. I have encountered hotels that don't have printers. You can also ask the front desk to handwrite a certificate and stamp it, and you can be reimbursed when you return to the company.