This was the first Army v Royal Navy game I have been to and enjoyed an exciting game with a dramatic comeback by the Navy - although the skill levels were pretty low grade from both sides overall.
I'm not sure I've ever been to a match with such a big attendance where so few of the crowd were bothered by what was unfolding on the field. The whole event was like one giant stag party! Mind you, the armed forces are entitled to let off steam in this manner (apart from the tedious pitch invaders) given what's going on at present.
The RAF used to play its home inter-service games at Twickenham until the mid to late 90s when rising costs forced a move, first to Kingsholm, then to Newbury, where inevitably things are a little more low profile. The demographics of the three services also count against the RAF as well - more women, lots of older blokes well past their playing age, etc. The Navy team competes well because it's predominantly Royal Marine!