Welcome to
planDisney, Alec!
I'm sorry that you've been having problems making
dining reservations. I remember a similar thing happening to me earlier this year. Restaurant reservations usually open at 3:00 AM (PT), however, some restaurants add more tables later in the day, depending on availability. I found that trying every 15/30 minutes yielded some results. Suddenly, there would be tables available for a restaurant that had no availability an hour earlier. Therefore, keep trying, and hopefully, you'll be able to book the restaurants that you set your heart on.
If you don't get any luck, try checking availability a day or two before your trip. Sometimes people cancel and availability suddenly pops up. On my most recent trip, I was able to make a last-minute reservation for the
Fantasmic! On-the-Go Package at Hungry Bear Restaurant. We enjoyed a nice meal and (more importantly) got the best seats in the house for Fantasmic! It was one of the highlights of our trip.
I'll be wishing upon a star that you have a delightful and delicious time, Alec!
Mike