Transfer from CDG to Le Havre

[Pvbgirl]

I see Oceania offers a transfer from the airport to Le Havre for the cruise we are considering.  Has anyone used it?  I’m curious how it works.  Is this a bus from CDG at a set time that you need to wait for or make sure your flights fits?  What other options have you used to get to Le Havre?  I usually never want to arrive on the day the cruise leaves in case of flight issues.  

[Huib]

Best is to take train.