Serenade of the Seas is a nice ship. The entertainment, food, crew, etc were all good. We tried three of the pay restaurants and liked them all. Our favorite was Giovanni's Table. Service and food were great. Chops was also very good. Rita's Cantina was a good lunch option to change up buffet eating. Also very inexpensive. Ten of us ate for about $30.
I highly recommend the drink packages. I chose the ultimate because it included all drinks, special coffees and bottled water. I don't know that we saved any money but the removed hassle of signing receipts and worrying about what your bill was up to every day was a very nice feature.
The entertainment was headed up by a husband wife team and they were really great. Very obvious that they both had a passion for there jobs. The broadway style shows were excellent but I would have to say the unicycle juggler was my favorite. What an incredible act.
The cabin was plenty big and very nice. Also, enjoyed the large balcony. Our cabin stewards were excellent and we looked forward to seeing them every day. The towel animals got more imaginative every day! Really the only negative was that we didn't have bath robes as we did on all of our Carnival Cruises.