In a few weeks I'll be flying a round trip SMF-SLC-BOS on DL. My only previous experience with Delta was back in Jan. 2004, a fairly short trip on an MD-88 and a Comair CRJ. I was satisfied enough with the service on those flights, but I've never been on a transcon flight with them, so I'm wondering what to expect, and if anything's changed since back then.
The aircraft as listed on my itinerary are 757, 752, 752, 738. I assume 757 and 752 denote the two different configurations for the 757-200. What's the IFE like on these planes, and what sort of snack/BOB service does DL provide on these flights?