Reservations for the Cantina are now be made using the Disneyland App, just like a normal dining reservation. Reservations can now be booked 14 days out and soon, Oga will accept reservations 60 days in advance.
When the initial reservation-only period for the new land ended last month, guests were required to make a same-day reservation for Oga’s Cantina via the Disneyland website. Guests using the Disneyland App were forwarded to the website when trying to make reservations. While not a major change, it does streamline the process.
A credit card is required to make a reservation and guests will be charged the standard $10 per person for missing or cancelling a reservation.
Disneyland also confirmed that reservations for Savi’s Workshop, which are currently available the same day, will soon be available 60 days in advance.
Source: Disney Parks Blog