My dad wants to go on a cruise this Christmas.  It'll be my brother (30s), me, my husband, and our two kids (2 and 4), and my dad.  Which cruise line/ship would be the best fit? We plan to go out of Galveston.  The best ships cruising out of Galveston at that time are the Royal Caribbean Liberty of the Seas, Carnival Breeze, or Disney Wonder.  RC website is down, so I can't see final pricing.  Disney is about 2x more expensive even with lower class rooms than Carnival. Any experience cruising with diverse ages/interests?   


Thanks for the help!