Flying to Belfast I would always sit on the left - you often get lovely views of the north Wales coast and the Great Orme at Llandudno, a bit of the Isle of Man and if the flight takes you up the east coast of Northern Ireland the half submerged islands in Strangford Lough and the Ards peninsula.
Fly POSH - Port Out, Starboard Home!
It's a shame you dont have status because the lounge at BHD boards straight onto the plane which is a rarity but very handy.