It was a few years ago now but DME was my worst. Combination of poor offerings and rudeness above and beyond what any situation could merit.

The 'hot' food was stone cold and when my colleague mentioned it, a member of staff took his bowl, applied about 60 seconds of microwave power before slamming it down in front of him with a snarl. Had no intention of doing anything about the rest in the serving dishes. I stuck to some plastic wrapped cheese and biscuits as the safest option.

This was a few years ago though so it may have improved.