Our mountain teams always carry bottled oxygen, which is used when the adverse effects of altitude require it. Please note that this is reserved for emergencies, namely where it is needed for climbers suffering from AMS. Easy Travel (and indeed, any other responsible operator) do not advocate the use of supplemental oxygen on the mountain, as such use is actually dangerous.
Please be clear that safety is always our priority and if the guides decide it is not safe for a climber to continue, then that decision is final. We do everything we can to get you to the top but will never compromise on safety. Never.