This was our 11th cruise and first European Cruise. The Liberty of the Seas is a wonderful ship. We really liked it. It was not "too big" as we thought it may be (The Allure and Oasis are too big for our taste).
Tips - Ladies unless you plan on purchases a scarf to wear, bring one. All the women in Europe wear them.
Bring money to tip your tour guides. It looked like 5 Euros was the average and they were very good. Even paying a lot for the excursions we still were compelled to tip these guides they did such a great job.
The cabin was very nice and I would not hesitate to get the same size cabin again. It had a tub, which was great but not wide. I am not a big person, but even turning around in it to get up was tricky. The balcony was big enough to have both lounge chairs for sitting and for laying down. There is a walk in closet with plenty of room.