I dont know about other airports but some Ryan pilots doesn't seam to like NDB approaches... on Gothemburg City Airport in Sweden we se a lot of RyanAir pilots beign offered a RW01 NDB Approach which is the closest and fastet way to land considering where they are comming from but they almost always go around the airport and land tailwind landings just to get an ILS on RW19...
Good luck on your paper
Best Regards
/Tim