Just to share a data point. Was on a 77H to PEK (the DM-heavy 390) earlier this week. the First/DM line had about 30 people. Water wasn't offered until asked but they did block the seat next to me (the flight was Y2 with F/J/W 0 I believe). I still think on short-haul, having the seat next to me empty is one of the biggest benefits of being DM (not sure the same for OWE?) as a lot of us have to fly Y (even though on ridiculously priced full Y) on short-haul due to company policy.