I had the honour of working for a small Brisbane based regional in the early 90's that had the same ethos as I imagine Southwest's to be. We were all colleagues and there was no us & them mentality.
Crew requests were almost always accommodated, not with reluctance but in the knowledge that the crew would give back. One task towards the end of the company's life had a Captain & I drive Brisbane to Bundy in a rented 1 tonner, collect a crated PT6, drive to Tamworth where the ginger-beer's fitted the engine, then ferry the aircraft back to Bundy.
I doubt you'd find too many airlines today, where crew would do that. It'd be a case of "I'm a pilot not a delivery driver". But in the above example, the company looked after us and we looked after them.