I just called this afternoon to see what was available for the week we will be at WDW. Was surprised that Brown Derby had an opening at 5pm on 9/23. Also available: 9/25 Biergarten at 4:40, Chef de France at 5pm, Marrakesh at 5pm, and Rose & Crown at 5pm. These were for a party of four. Unfortunately, nothing available for the places that I did want 
