I have managed to get to Sidmouth most years, but don't buy a ticket, as I am so busy with non ticket things that I would not have time to use it.

There is so much happening around the town from morning to night, though sometimes you do need to know that it is going on as it is not listed in the official guide.

If there is something you particularly want to see there are single tickets available, so it really all depends on what you go to Sidmouth for.