I received one on a ANC-SEA redeye back in November. Don't recall flight number, but was one of the flights that depart after midnight and arrive Seattle 5am-ish.
No food on this flight, blankets must take up so much space in the catering truck, they must not have any room for food...
Blankets are nice nonetheless, should be on all flights...
When there is no food service, I just ask for a cheese platter or deli pack.