Nikolai,
Ryanair have been known for their rather heavy landings at times. I've certainley experienced a few of them myself, not just at BOH, but elsewhere too and the other pax certainley seem to notice judging by the looks they give each other ! The runway length isn't an issue even when wet, It's just the way RYR do it !
I think the flight deck crew must have all been carrier pilots in another life and still think they're flying F-4's/Etendards etc