We loved the Sunshine!
Embarkation: Port Canaveral is a great port to sail from. The embarkation/disembarkation processes are smooth and efficient. We had FTTF. It really wasn't necessary for boarding. We boarded after a wedding party, diamonds and platinums, and were onboard by eleven. As we were leaving the lounge, they were already calling the zones for boarding. FTTF was great for the other perks, though.
Cabin: 8121. Great cabin in a quiet location. Seas were rough the first couple of days, and you could definitely feel the rocking. We like the movement--makes us sleep like babies--but if it bothers you, you may want to consider a lower deck.
Loved the cabin and the location. Very quiet. We could feel the motion, particularly with somewhat rough seas the first couple of days. Not the best choice if you are prone to seasickness, but we loved it.