We tried making dinner reservations over the phone from our cabin and couldn't. Either we got a recording or they didn't answer the phone, I can't remember. So we got up and walked to the first restaurant, and right there we made reservations for the whole week. They were able to do it on their computer. We just randomly picked the different restaurants, one for every night at 6 PM, except for the night we were leaving the ship for a luau. It worked out great.