Just returned from a 4-segment DL F trip ... no power ports on any segments, including the Biz Elite one! AS considers ATL - SEA to be a transcon for meal service; DL didn't. I wasn't wildly impressed with the snack basket, though it was nice of them to offer a few passes SLC - IND (the best service of the four). The Biz Elite segment got off to rather a bad start by boarding late, and then chiding the incoming passengers for a potential delay.

For those interested in upgrade possibility, there were 26 on the gate screen @ ATL.
I hadn't realized that Delta clubs serve (free?) hot meals now? The gang at the SEA club were really hopping to deliver them!