We just sailed on Reflection for a 3 night cruise over Memorial Day weekend. We have sailed celebrity for 11 years but I was a little worried about how this cruise would be as it was sold out and I knew there would be a lot more kids than usual. We booked Aqua Class since the cabins only allow 2 people and because we could eat in Blu. We had a great time, no issues and I would do it again in a heartbeat!
Since you are new to Celebrity just be aware if you choose an E class ship only Sunset verandas and suites have traditional balconies.