Maria - I'm sure you will have a wonderful experience. We did the QEII several years ago, NY to London, it was an incredible experience - to do a transatlantic is amazing, I couldn't believe we wouldn't see land for 5 days, but sure enough we didn't!
I think you picked the right thing for the family, and especially since you have teens going, and since its in the middle of summer, I'm sure your whole family will love it and it will be something you'all will remember all of your lives.
