Thank you so very much for answering my questions as I have planned this adventure.
Currently I am trying to coordinate travel from Toulouse Airport to Barcelona airport via train.
I have been to the RENFE website and because travel is not until July, I cannot make arrangements.
I have read, in some places there is a train station within the Toulouse airport and, in others, one must take a shuttle.
It is described as a quick shuttle but prices do not reflect that.
Planning for a long trip with others has its challenges.
Thank you for your kind advice,