Have a blast! Sorry, no tips here cause you'll be on your first "mega" ship before me. But, also as a fellow cruiser I'll be real interested to hear what you think of your cruise, so please post whe you get back!
Maybe you can help some of us when you get back. Would you please tell us about the Cruise Compasses and the activities inside the ship? I would really like to have an idea of what the activities are like before sailing.