We just cruised this month and had a wonderful time onboard. This was our second time cruising the Disney Wonder, the first time being in 2003. We noticed lots of changes -- pleasantly surprised.
The entertainment was great. The movies shown in the Buena Vista theater were current releases. I suggest going to their presentation on shopping in Nassau as they give really good info on where to go for great deals and free stuff.
The accommodations were wonderful. My husband and I traveled with our 12 year old son and he had a wonderful time at their Oceaneer Lab.