Interesting (at least to me) situation coming up for me at the Hilton Crystal City:
Staying Wednesday night.
Thursday is taanit Esther, which starts at 5:09am (or 5:16am, AYLOR).
I called and spoke with a front desk "night" manager who said that they are very thin-staffed at night.
Breakfast in their "Marketplace" doesn't start until 0600; she has asked senior management in past if they could open the Marketplace for the 5am shuttle riders, and management has in past said can't do...Union issues. "Not sure who would be able to help get you breakfast at that hour."
There is a lounge, and as Diamond, I would have access, but apparently it doesn't open for breakfast until 0600.
I explained about the taanit, can't eat the rest of the day, need to eat before 5am, and that it needs to be kosher. She said she would speak with management team tomorrow and see what they can do for me. She implied not to hold my breath, so I gave them what I think is an easy out: give me a couple boxes of Kellogg's cereal, a carton of milk, and some fruit, and put it in my room the night before (when I arrive).
I'll let you all know what transpires.