Depends how you define, "so much more". The cruise that we are leaving on this next Sun, we up graded from a balcony stateroom to a OS suite and it was $255.00 more for the two of us. That comes out to $51.00 per day. Not so bad when I look what I sometime drop in the casino.
Another thing I look at is I see people rushing to get Platium Status so they can get the VIP treatment but with upgrading to a suite, you are VIP status and not have 10 cruises with CCL.