You don't just 'send out for water' at an airport. You have to find a caterer who's open, then you have to have pay them whatever exorbitant sum they want to charge you for bottles of water, not to mention getting someone to approve the expenditure at midnight (unless you think the skipper should pay for it out of his own pocket and trust me, it is expensive when you uplift catering in those circumstances). If it was as easy as you think it was then it would have been done. If you think a three hour delay in Spain is unique to Ryanair then you've obviously never been on a charter flight down there that went tech.