My husband and I will be visiting Paris the first week in April and would like to do a day trip to Loire Valley and tour some of the castles. I’ve read through many of the posts and learned that we can travel to Tours via TGV (from Montparnasse station to Tours Centre) and then participate in one of the tours offered by the Tourist Office of Tours. We have never travelled via TGV, so I’d like to understand whether we need/should purchase tickets in advance (like the airlines) and if so, how far in advance and where do I purchase them? Same question for the tour—advance tickets?
Thank you for any guidance you can provide.