Originally Posted by DCBOE
The company were far more concerned about whether we had remembered to pack the tow bar in the hold, than they were about being on time or the freight!
In some places of world being on time means within the same week
On topic: Really depends on the type. 737 is so common that all airports (even most military places) than can accomodate 737 in terms of runway and taxiway length/width and apron strength, tend to have a towbar for 737 as well. At the smaller airports, there are no nose-in parking stands, so no need for a towbar anyway.