On Thursday, March 19, the entire French unionized work force is planning strike. This includes both train and airline employees.
In making travel planes, please take this into account. Make sure that the means of transport that you are planning to use to get to Bordeaux will indeed allow you to get when you plan to arrive. Especially if you are an invited speaker, don't get caught planning to take a plane or train that isn't operating, and please don't wait until too long until making sure that your finalized travel arrangements are safe.
For more information about the strike itself, see here, for example.