<human>: Can you provide a brief overview of the text?

Looking for some advice:  My father-in-law just invited my family to go on a cruise with him, and my husband and I are debating how practical that would be.  We have two toddlers - a just-turned-one-year-old (14 months) and a not-quite-three-year-old (34 months).  The cruise is in a month, so add that to their ages.  Some things to consider:

* The older one is completely potty trained, and we use cloth diapers on the younger.  
* Older girl loves swimming, younger is barely warming up to the bathtub.
* Both are very physically capable.  The younger one can walk very well and crawl up and down stairs fairly confidently.  
* Both like to meet new people and situations, but the younger one is very mommy-clingy at the moment.
* We're behind in the kids' vaccinations (we moved and I've had health issues and life has been crazy; we're working on it), and I don't know how much a concern that would be.

Neither my husband nor I have ever been on a cruise before, but my father-in-law and his wife do them all the time and would love to spend time with their grandbabies.  It sounds like it could be a lot of fun, but it also sounds like it could be a lot of stress, and we just don't know whether or not it would be worth it.
<bot>: Considering taking a one-year-old and a three-year-old on a week-long cruise.  Anyone have experience or thoughts to contribute?