Hi Krystina,
Welcome to planDisney!
I am happy to see that you have secured at least one
advanced dining reservation! Although you are more than welcome to try
contacting a Cast Member by phone, you can check dining reservation availability online. It can be difficult to modify an existing reservation to accommodate two additional Guests, so also try checking for a new reservation. Depending on the size of your party, it also might be easier for you to find a reservation for two at about the same time and then, when you arrive at the restaurant, ask a Cast Member if they can seat you together. The best option is to secure a new reservation with everyone in your party.
If your dining reservation is at a restaurant located at
Disney Springs, check the website for that restaurant. There may be a number you can call for that specific dining location. If you cannot call to change the reservation, continue to check availability online. Cancelations do happen. I have been able to modify or make new reservations in the past. And, as a matter of fact, I am trying to change one last reservation for our upcoming trip. So, I check every day, multiple times a day!
Krystina, my last bit of advice is to make a few more dining reservations if you can. Depending on the time of year you are traveling, it may be more difficult to find
Walk-up Dine Availability. Although
Mobile Food & Beverage Ordering is an option, I suggest that you always check at least an hour before you want to dine to see when the arrival pick-up windows are for those orders.
In the meantime, I am sending a little extra dining reservation pixie dust hoping you are able to modify that existing reservation or make a new one if you have not yet been able to do so!
Magic and memories,
Donyell