In October I found a good deal (interior, OV, and balcony all the same price) for the first 11 days of QE's 2015 World Voyage from Southampton to Fort Lauderdale. I let Cunard book my one-way airfare to London and got a great deal (about 20% of what booking airfare on my own).
By the time I arrived in Southampton (two days early) there was already talk that QE might be delayed returning to Southampton. The day before we embarked Cunard notified us that there would be a delay and we were to go to St. Mary's Stadium instead of the terminal. Messages were sent by e-mail, text messages, and letters left in the major hotels.
At the stadium, things were handled very well. At arrival, luggage was taken directly to the terminal. Although it was a long afternoon, we were well taken care of including visits from Cunard officials. It did not take long to get checked in, go through security, and get on board once we arrived at Ocean Terminal. I gave Cunard five stars on "Embarkation" because of the way they handled this situation.
My stateroom on deck 8 was much noisier than my deck 7 balcony last year. No complaints about the actual stateroom (condition, furnishings, bathroom, etc.)