Add me to that ''lucky list'. I'm 2nd marriage, same age gap as you, no walima, only stayed 4 days after the marriage, no mutual accounts or same address etc. Got pre-arrival last week without interview. Feb 2018 applicant. I did visit her for 2 weeks few months ago.
I had ordered GCMS notes which I just recieved few days ago and the officer had noted all these things, however he said based on the proof provided he is satisfied the marriage is genuine. He mentioned we both look good together
and we both have same university level education.