Hmm, all the P&O ones I've looked at so far seem to allow babies?

Re seasickness, I've never had it. Now, morning sickness might be another thing though, as last time I had that for 32 weeks quite badly ... hmmm ...
Have you spoken to P&O or checked the fine print? I'm certain they don't allow kids under three. I posted info about this in another cruising thread recently. I was so disappointed when I found out

Maybe it's under one year? Will track down the other thread. We've been looking at Kids Clubs lately so under 3 might be related to that and my preggy brain may have it's wires crossed