We did the Seaside last year and I would rate our experience around a 5. They had some things they did well but a number of things they flatly failed at compared to all their mainstream competitors. I understand it was cheap but my complaints were not over missing luxuries, it was simple things like serving hot food and not taking an hour to serve the entree in the dining room. Those things should not be price dependent. I really wanted to like it but they did not win me over as a customer, I would take a Carnival cruise over that experience any day of the week even on a Fantasy class relic.
We are giving it one more chance this summer on the Seashore. If our first cruise was a bad week then we will carry on, if it is a similar experience we won't be back.