I'm in my second month of TDY. I booked an entire month at the downtown hotel thinking it would be like EWR reserve and I'd barely work. Joke was on me. Got worked like a rented mule. Barely spent any time at the hotel and was constantly changing my PNRs for travel home on off days. I bid a line this month and got one. It's much more stable and worth more money for more days off. Moral of the story... If you plan on sitting reserve and not working, then you're in for a real treat.