For onsite guests you still make them 90 days out, you call on the 90th day just as you would any other time, only now you can make reservations for up to 10 days more into your trip. So 90+10. Instead of having to call every day on the 90th day for the meal you want, you can call on the 90th day to your arrival and make dining for your length of stay (or up to 10 days).