Steve Niles Remains (2011)

In an opening right out of Night of the Comet, after an unexpected event occurs, only those who were protected in some sort of steel lined space are left alive, while everyone else turns into zombies.  Our characters were in car trunks, storage rooms, etc.  Various survivors hole up in the hotel and try to figure out what is going on and what to do.

After twenty minutes of average zombie action, there is a switch to  serious character development with lots of exposition which throws the brakes on the pacing.  It feels awkward and actually made me care less about the characters.

After trying to engineer an escape, some of the survivors get trapped in a bus and are saved by a small military convoy.  At first they're excited, but there seems to be something else going on as the military keep them confined to the lobby of the hotel.

The military are secretive, treat the survivors like captives, and are not to be trusted.  You'll end up disliking them more than the other characters, except the a-hole survivor who pushed another person into the zombies so he could escape.  He's the worst of the survivors.  And why does anyone trust this type of guy?  They saw him do it, but they still don't take precautions to make sure he doesn't sacrifice them.

In a different take from other zombie films, the dead sleep all sleep at the same time and do so standing up.  So a street full of standing, sleeping zombies has the potential to be successfully navigated.  Also the zombies outside the city are getting faster and when they enter the city they start eating the slower moving city zombies.

At the end, you're left not caring about any of the characters as they are mostly annoying or ruthless.