Rough flight so far this evening/morning.

11/121 DL272

- Flight left on time with minor runway delay which is to be expected with weather
- Couple of hours into flight the pilot announces we are diverting to ATL (not JFK) due to mechanical issue
- Landed at ATL ~1am. Reboarded 2:30am
- 4:30 am still on plane at gate. No word on when we are leaving.
- Crew is now timing out and claim it's before the mandatory time when they must provide water.

Is it true they will not provide water until a certain amounts of hours waiting? Delta thankfully just sent everyone vouchers were aren't worth much onboard at 4:30. Right