I work for an ULTRA low cost airline ! I have never even been asked why, directly or indirectly why I took more fuel, the company works on the simple basis of 'he must have a reason' , and allow me to use my own judgement of each situation ! They ask me to save fuel for sure, but never dictate to me how, my point is simple....not all low costs are the same. Not all things in my Low cost are perfect, but in this regard, i admit...faultless.
NOT ALL LOW COSTS ARE THE SAME !!! Fly safe to all