….Arles. After that half-hour or more wait in Paris to purchase the mandatory seat reservation for the TGV high speed trains, I subsequently tried the online service on my rail planner app. I found it to be quite convenient, save for one wrinkle. The bar code where the car and seat assignments are embedded does not convey that information visually. You need a conductor to ping it with his device to find out. On this leg to Arles, I discovered how iffy it was relying on platform staff to perform this service.