First,I suppose the W/L situation is because it would be Diwali/Puja that time.
Secondly, there are quite a few seats which are invariably reserved for VIP's/VVIP's. In case they dont turn up, the berths get alloted to W/L passengers, to the extent that one person in W/L in 2A got upgraded to 1A after chart was booked.
Thirdly, there are times when few seats go vacant because the VIP's dont show up. When I was returning from NZM to SBC in 1A, only my co-passenger and I were in the cabin for the...
more... entire journey, though there was some W/L upto the time of charting. This shows that not all seats are available for the public.
Fourthly, I wish that you get your ticket confirmed. It is a great experience to travel by 1A(atleast at one point of time in our lives)