If you think the MILK coffee (ateast 90% of Oz cafe sales) you have purchased in a cafe has been well brewed, is pleasant and therefore satisfies your need, then maybe it doesnt matter....
Otherwise of the opposite has occured and that is, that the MILK coffee you have purchased in a cafe is awful or unsatisfactory in some way, is not pleasant and therefore does not satisfy, then I will stick my neck out again as usual and say that it is most probably the result of bad handling by the EMO (espresso machine operator) so freshness of beans probably doesnt come into it.
If on the other hand you have ordered a "simple" espresso and it is brewed well but is merely palatable, then you can I think, think about freshness. However you only have to note that most "cafes" (eateries with a coffee machine) still dont run the contents of their doser mehanisms down and out towards the end of the day so what they start with next morning is stale grinds....and most dont understand the makings of a decent espresso anyway.
So, I think there are other variables, that are perhaps more important at the brewing end of things, than freshness of beans "per se".
Over to you.