Larger bathroom, the Sun sisters have jacuzzi tubs and lots of marble. The towels are bigger and thicker. Some have walk in closets, two TVs...that sort of thing. C747 on Dawn had a huge balcony with a table and 4 chairs and two lounge chairs. It also had a storage shed!
Just returned from an E. Caribbean Cruise on tyhe Grand Princess. Booked a mini-suite and it was great. Plenty of room for the 4 of us. Nice size bathroom, lots of storage space, great balcony etc. We booked the port side and had a great view of sailaway from our balcony!
I sailed on the Pacific Princess years ago in a mini suite. NO butler service at that time! The disadvantage was having to keep drapes closed in port because the room was eye level with the pier. Lovely mini suite!