It's a 4 star line/ship as are RCI & what's wrong with having a change? I'm sure you will enjoy GP it's a lovely ship.
Great ship, great service. Dont worry just enjoy.
On a par with Royal Caribbean ships. 'Americanyfied'.
Was on Grand Princess in August this year. Very good. Like others have commented, on a par with RCI, but personally think the food in the main restaurants is superior to RCI.