It won't be running during Thanksgiving.
The DEP pretty much keeps the same schedule each year. It goes like this:
Runs daily during the peak summer months which start mid-June.
Goes dark the day after Labor Day.
Returns for a 2-3 week run around Christmas peak season (Dec. 19-Jan 4 this year).
Goes dark the day after Christmas peak is over.
Returns and runs daily for Spring Break peak season (2 weeks surrounding Easter).
About 1 week after Easter, the DEP begins playing only on weekends. It continues to run weekends only until Peak Summer season which begins mid-June.
WASH-RINSE-REPEAT.