The 3 hour rule protection from worries

This rule is one that I learned which was be at the airport at least 3 hours before your flight but I say 4 if your flying first or business after all you do deserve to spoil yourself just a bit come on you worked hard for it. This rule basically takes care of your boarding you waiting in line any unforeseen situations such as a flight delay or last minute cancelation or even asking for a seat upgrade every hour counts