Upon my word, you are to be commended both for your valour and endurance! To attend, all unprepared, the full performance of any opera is no feat for the faint of heart or full of bladder. It must also be said that you displayed uncommon sagacity in your choice of beverage. When unsure of the amount of time to be spent in place, the short is always to be preferred, though I would defend the merits of neat single malt Scotch over vodka and coke unto death. That apart, again I salute you! Bravo!