John and DesertGuy,
I did that cruise last year, the Summit out of Los Angeles for a 15 night Hawaiian Island Cruise for Christmas and New Years. I was a fantastic cruise and we had a lot of fun. THe only down side was the waters were a little ruff at that time of year crossing the Pacific (westbound) because of storm. Captain was smart and left last port a little early so we beat a storm and had smooth sailings on the way back. The ship is beautiful for the holidays and they do an excellent job. I am doing Panama Canal this year but there were some people who i met on the ship who booked the same cruise for the holidays next year.