We rented points to friends last year. They wanted the Dining Plan, so I called him, then conferenced in Member Services and we had a 3-way call. I verified who I was as the owner, told them I wanted to add the Dining Plan, and then my friend paid for it using his credit card right there over the phone. It was very simple. Another option for you, if you can coordinate the time to call with your owner! Of course, it did help that our family's are close friends, as he wasn't worried that I was going to abscond with his credit card number. But if you trust the owner in all of the ways you need to trust them for the reservation, then reading the card out loud may not be an issue for you.