CHRISTMAS
I work for an events company, and we start selling tickets for our Christmas events in the summer - and tickets always sell out by October. But still, we have those customers who complain about Christmas being mentioned so early.
Christmas is our busiest time and biggest money maker. If we waited until November to sell tickets we would have no idea on numbers in order to book and organise our suppliers etc. Events take months to organise and selling tickets is one of the most important parts!