Buddy flew a Lr35 out of YYZ about 13 years back. Company execs wanted to go to head office Xmas party. Load up, starts snowing taxi to the central delay facilities. Long story short 2 hrs in line, timed out prior to takeoff, return to hangar as they missed the party. A week later edict comes down from head office "flight operations in YYZ are to be suspended during snow events". The bill was over 16k$