If I were you I'd be very careful about booking the Dream,,,,She was my 1st cruise way back in 1994 and I've been hooked ever since.
Back then she was called the Dreamward,,,they "stretched" her and re-named her the NCl Dream.
She is a gorgeous ship,,,we had a balcony cabin mid-ship. She is very friendly as far as getting around on it. Just a nice size. Not over crowded.
I have also done that itinery,,, although not out of Houston. We love the western Carib route,,, I have thought about booking it just so I could go on her again.
I have also been on the Wind which is a "sister" to her. Loved them both.
So I would not hesitate to book it.