We found the 10 day cruises have less children on board. BUT remember you are going on a holiday sailing and that would mean to me more families. Princess is a great line, we have sailed her twice once on the Golden and in March we were on the Sun. We like the smaller ships without all the glitz. The Sun & Golden are both beautiful ships. The Golden being the bigger of the two. We found the food to be good on both ships, the extra pricing would be for dining at the specialty restaurants. I don't know about the spa prices because I haven't gone to it. (YET) We found that the staff were very friendly and aimed to please. We really liked the Sun Princess and are going on her again in March. Enjoy making your decision.