I’ve been to this event, I think, 9 out of the last 10 years. Regardless of the exact number, it’s a lot.
On one hand there is the sheer repetition of shooting the same things, year after year after year after year. In all likelihood you just end up with small variations on the same images year after year.
On the other hand there is a kind of lazy comfort, you can get your job done easily and quickly, and there is an opportunity from that to try some new things because once you’re covered, why not ?