With the economy being the way it is there are fewer travellers and fewer TS diners...people may opt for more CS.
I was able to get an 8:05 am CP breakfast with 2 days notice, 1900 PF dinner with 2 weeks notice etc....
We are leaving in 5 days and the only ressie I have not been able to switch my time for is CM breakfast, the others (Tonys, Wave, Sci Fi, Kona, GFC and San Angel Inn) I have been able to tweak the times.