The whole book revolved about some stranded aliens trying their darnest to one up each other on being the nicest to everyone else.

I'm sorry but the well-meaning-but-over-the-top-goodness and tipping-around-on-alien-toes-gimme-a-group-hug was reaching too sleazy levels for me... I know it's some kind of utopianism hidden in here, but c'mon. I enjoyed the previous books in the series but this was definitely the most ridiculous one.