The Bolshoi Academy are indeed going to Barcelona - performances are actually from 22nd December to 27th December. No performance on 24th December and 2 performances on 26th December. The programme is a suite of dances from la Fille Mal Gardee in the first Act (new Grigorovich choreography) and a suite of dances from the Nutcracker in the second Act. I can assure you that you will enjoy every minute - the students are very talented. I saw the full la Fille Mal Gardee premiere in Moscow 4 weeks ago and it was excellent - my British son was dancing in it; he makes ballet history next summer as the first ever British dancer to graduate from the Bolshoi Academy with the Bolshoi Diploma - in fact only a very small handful of non-Russians have ever graduated from the academy in its 236 year existence. His name is Henry Perkins.
The tickets are now on sale for the barcelona performances through the Victoria website.
Henry's ballet teacher, Ilya Kuznetsov, at the academy puts lots of videos of the students, including La Fille rehearsals, on You Tube. His channel is:
I hope that you get to see the performances.