We have been on the Dawn multiple times over the years and despite her age, it is still an excellent ship on which to cruise. We've tried larger ships but the crowds and lines are off-putting when you took a cruise vacation for the relaxation.
The Dawn is the perfect size, large enough to find quiet out of the way spots but small enough that you are not sharing every meal and theater show with thousands of people. The staff and crew of the Dawn are what set it apart from other lines and we always make friends with members of the ship's crew every time we sail. We have never had a bad steward on NCL, and Faisol was no exception. He was responsive and attentive the entire cruise and could not be more friendly. The same can be said for the wait and bar staff throughout the ship. Donnah and Jinky in the Garden Cafe are lovely, Donovan in O'Sheehan's was always fun and funny, Julia and Hetut in Aqua were fantastic and Maryella in the Venetian was also great. Jenny in customer service was also super helpful and friendly.
The entertainment on the Dawn is the best at sea. They changed the shows in the Stardust Theater and I was sorry to see the Second City troupe go (they were always top notch) but the replacements were fine. Jose & Patti alone are worth booking the cruise for. They are phenomenal and I loved that they added a theater show from them. The cover a wide range of music and do some spot-on impressions of Neil Diamond, Johnny Cash, Cher, Janis Joplin, etc. Always a great show,
The cabins are slightly smaller, but I am a "big dude" and could operate with ease in the cabin and bathroom (though it was tight). Get an ocean view if you can because the inside cabins tend to be dark. Balconies are fine, but port hole and picture window views tend to be closer to the water line and offer less movement if you are not sure how you will fare on the sea sickness front. (I am descended from a long line of drunken Irish pirates, so no issues here)