I found them on non Disney boards (general travel/cruise boards)... that's why I questioned them because sometimes "disney people" see things differently
If you have read CruiseCritic then you will probably get a more unbiased view of things from people that cruise a lot of different lines. There is a DCL board there, but it the fans over there are not as hard core Disney/DCL as they are here.
That said, food reivews are highly subjective. We were recently on the Wonder and were not impressed with the dining service, but the food was good. The only thing we didn't like was the food with the character breakfast. It was not good at all. Cold, unimaginative and tasteless.
We found the food in the MDR to be very good, but then again, we enjoy the Blue Bayou in
Disneyland and a lot of people complain about that too. I'd say the food on DCL is just a little bit better than BB at DLR and there are more options over the course of the cruise.
Palo is outstanding. Can't say enough good things about it! Everything from the food to the service to the atmosphere.
As for the ship, the Wonder is amazing. We're sailing her again this September. How is that for an endorsement?
As for the itinerary, I think you should choose the 7-day as you will get much more out of the cruise than the shorter 4-5 days versions. Our first cruise ever was a 4-day and we wanted more. Our second cruise was a 5-day repo cruise and we really enjoyed it. The 7-day seemed to be about right. We still wanted more but were also glad to be home. Just the right balance ... for us.