I am in the early stages of planning a 7-day Mexican Rivera cruise for early April 2007. We will be a family of 4 in one cabin ("kids" will be 15 and 1 and my parents will be in another cabin. What cruise lines would be best for my family? Carnival seems like a logical choice, but I'm worried about a lot of unruly younger children running around. Any suggestions?
Either Royal Caribbean International or Princess Cruises would be a good choice for a first cruise. There lines are pretty much middle of the road, with two formal evenings and five casual evenings on a cruise of seven nights. If you decide that you want something more upscale, you can move to Celebrity. If you decide that those lines are too upscale, you can give Royal Caribbean a try.
I also would not take children on Carnival, but others obviously do.