DAT flying Finnair’s HEL–BCN route this summer anyone flown them before?

So Finnair’s letting DAT handle their Helsinki–Barcelona flights this summer. I don’t mind a wet lease, but let’s be real: it never quite matches the “mainline” feel. I'm booked on this route in July, so now I'm wondering what to expect. Anyone flown with DAT recently? Smooth enough, or should I prep for barebones?