I remember one day at Akrotiri two Mirage IV pitched up unannounced followed a while later by one or two KC135. They were exercising their right as a CENTO power to come to Akrotiri and completely ignored the PPR and dipclear rules.
They duly filed to the mess cellar, collected all their duty free and departed.
We let them.
Can you imagine them allowing a number of our jets to simply pitch up and go shopping?
When we went into Merignac apart from providing transport to our hotel they also took us to Carrefour for our shopping. Again, can you imagine MT laying on a run to Tesco?
I think it is a question of style.