If you let us know rote, date and departure time, then people can advise where you can see availability.
Oh that would be very nice.
Sa. 27 Mai 2023
09:38
Paris Gare De Lyon
16:34
Barcelona Sants
5 seats (I’m not with this. We are 4 plus have a 2 year old child with us. Can we get a seat reservation for her without pass?)
I would also take 1st class tickets if no other available.
Thanks in advance!
There is still availability. Since there's no limited pass holder quota anymore on this train, you can just check on www.sncf-connect.com whether you can still get prices for 5 people and that's the case.
The 2-year old can have a seat if you buy a reservation and add a free child to your Interrail pass when ordering.
Price of the reservation is €35 per seat or €37 per seat if you book via Interrail. Ways to book this train are listed here:
Also don't wait too long with booking trains in that weekend. It's Whitsun weekend so it could be quite busy.