[MENTION=200203]kaija[/MENTION]: if you're visiting between 8 July and 3 September 2017, you can enjoy a 40% off discount if you travel in a group of 2 to 5 people on the TER regional train with a 'illico PROMO VACANCES' ticket, which can be purchased online or via the app. For details, visit the TER Auvergne-Rhône-Alpes website: https://www.ter.sncf.com/auvergne-rh...promo-vacances (webpage in French)

After 3 September 2017, a similar offer is available if you travel by TER regional train on a Saturday: https://www.ter.sncf.com/auvergne-rh...o-promo-samedi