Flex Dining (still on some trains, thankfully being replaced by traditional dining) was a cost-cutting measure disguised as modernization and consumer friendliness (which it most definitely was NOT.) It has gone through many iterations, and the current one is slightly less awful. It consisted of pre-made, reheated meals with deadly levels of sugar and salt and enormous amounts of non-recyclable plastic packaging. When you ate it in your room, you had to deal with lots of trash, with no where to put, especially with two people. There was way too much to fit in the tiny but usually adequate trash bin in a roomette, and you had to unpackage it all and get rid of the packaging just to eat. The meals themselves were like budget airline meals without the ambience. The "Flex" name came from the fact that as part of the program, you didn't need to make a dinner reservation, but could eat whenever you wanted to (during meal hours). If you ate in the dining car, it was pretty much self-service: you would collect the packaged meal from the counter and sit anywhere you could find a vacant seat (or carry it back to your room if there were no available seats.) If you ordered from your SCA, they would deliver the same Flex meal to your room, approximately at the time you requested, if they remembered to do so.