Have been on the Dawn Princess 5 times and on her sister ships (Sun Class), Sea Princess, Ocean Princess and Sun Princess. These ships have a great layout. Will also be going on the Dawn Princess to Alaska in July.
Make sure that you eat the steak house one evening, it has been outstanding when I have done it.
Caribe deck is a nice centrally located deck. Not too many decks up from the night-time activities and not too many decks down from the pool areas.
One of my favorite spots on the Sun Class ships is the area around the splash pool forward above the Horizon Court. It doesn't usually get too crowded.
I think you will like Princess, have always found their product to be consistent (27 Princess cruises so far)...any questions, please post here or feel free to email me ant put a note in the Subject: Cruise Mates...