I seem to remember that there are some RS types going to be in Budapest in February.
I want to point your attention to something fun. From the 12th until 17th is Mohácsi Busójárást Festival in the town of Mohács near the border with Serbia (website: https://www.mohacsibusojaras.hu/ and video: https://youtu.be/6ptJVlqbPGM?si=eva6rcJGnJL93Cwq).
So, great, how do you get there? Well, thats the other good part of this. MAV, the Hungarian rail service, has a special train going down on the 15th (https://www.mavrailtours.hu/hu/programs/show/353). These are their top of the line carriages with huge windows (https://www.mavrailtours.hu//adat/galeria/2/big/apee_010.jpg) and a dining car. A real dining car (https://www.mavrailtours.hu//adat/galeria/52/big/wrm027_belso.jpg), not a snackbar car. Use the Hungarian language pages with your browser translator for the MAV rail site. There is more information. This just went on sale and will sell out quickly.