On the topic of fuel carriage.
Does your airline allow the contingency fuel to be consumed on the ground before departure. Our airline caters for 500 kg taxi fuel (A330) but often we burn over 1000kg with extensive ground delays consuming our entire contingency reserve. I think its absurd as the intent of contingency fuel is to cater for unknown variables after departure. Our company does not encourage extra fuel for departures from busy airports when long taxi is expected because "you can use the 5%". Thats not what its for.
Secondly, how do your airlines plan for thunderstorms at destination and alternate. If both ports are forecast heavy thunderstorms for your arrival, do you carry extra fuel for this and how much.