Hi there!
Long story short (there's another post elsewhere on the whys), my family of 4 is arriving in Barcelona by air, on June 19th, then going to Valencia immediately the next day (June 20-23). We will take the highspeed train. (We may go to Sitges too, but I admit I haven't started the considerations or implications of that, just thought a nice beach day on our way would be nice). We will return to Barcelona on the 23rd and stay until the 28th (and then to Paris area).
There's about 30 Euro difference between refundable and nonrefundable tickets, so wanted to post here for thoughts before I buy (not sure I'm confident about nonrefundable, but getting a little frazzled by now with my last minute planning and the inevitable hurdles that keep popping up!)
Appreciate your thoughts, as always.