Those "in the know" will (or should) go to the Park those days. Shorter hours, with less people, can be a GREAT
Disneyland day.
However, many (out of towners) will be turned off by the shorter hours and make other plans that day and locals will not bother with the after work or school visit because there are not enough hours.
It's a nice day to visit DLR, imo.
- Dreams