Firstly, as this was our first cruising experience please excuse the wide eyed newby take on our cruise.
The Summit did a 7 night Bermuda cruise with 3 days in Bermuda and the balance at sea. My spouse my 6 yr old and I cruised in Concierge class. We booked rather late and so got a fairly good, but not exceptional deal.
Our overall impression was that the Celebrity Summit is a very efficient and well run ship. Staff are unfailingly courteous and efficient. Our room was invariably serviced every morning by the time we returned from breakfast (even on our last day) and was turned down every night when we returned from dinner. Marissa, our cabin attendant was a charming and diligent staff member.