Hi. When travelling by train from Bordeaux to Paris:
1.- What is the usual train station for arrival? (is it a specific station or I can select one).
2.- What is the best time to travel from Bordeaux to Paris?
3.- Is it worth it to buy a first class train ticket or it is OK with the regular type?
4.- What type of services one should expect to find in a train?
Thank you very much for the reply!

PS: I think that this service is very convenient.