LLOLPIs were always fun in the F-4 - but we rarely got much of a chance to practise as the Viet Taff moaned about the sound of freedom. As for built-up areas, pedal to the metal and transonic jump at low level chasing a bunch of Jaguars on an exercise springs to mind... But that was somewhere up North where there weren't as many built-up areas anyway.
Not quite the same as ACT though - that had MUCH higher base levels.