Howdy, Kallee!
So happy to have you back here visiting with us!
Yes, you can make your dining reservations for the entire group at the 180-day mark in which you plan to dine.
The 180-day mark is based on the date in which you plan to dine. It is not linked to your arrival date to Walt Disney World.
For example, if you want to make
Advanced Dining Reservations for September 6, 2019, you can make that reservation beginning March 10, 2019. As of today, you can reserve dining up to July 30, 2019 and on tomorrow it will be up until July 31, 2019 and so on.
Even if you don't have a current resort reservation at Walt Disney World, you can make an Advanced Dining Reservation. So, Kallee if the date that you want to reserve dining for your entire group is available, so ahead and secure that reservation. Some of the most popular dining locations may not be available if you wait much longer.
Have the most magical time with your entire group!
Korliss