The NBC is lovely, but massive (I believe it was the biggest hotel in Europe when it was first built).
Unless you pay for an admirals floor room there, you could easily find yourself trekking a good 5 minutes or more from the reception area to your room - and hanging around a lot longer at the lift area if, like when we were there, only 3 of the 5 lifts were working (and at the end of the day in the parks that 5 extra minutes feels like miles). The east wing rooms could do with a refurb too IMHO.