We did do a big AoS bake off back in November 2016
https://theartofsound.net/forum/show...s-and-Comments and more people turned up then said they would. About 50% more. We'd have done it again but the venue - which was massively suitable (car park, beer, food and accommodation on site) closed down soon afterwards.
Putting a show on like Wigwam have is a massively bigger undertaking plus you have to charge people to get in and hope you don't make a huge loss. Even so the main drawback to doing something like that is finding somewhere suitable where they don't want stupid money for renting it. Also Wigwam have been doing it every year since about 2010 and arguably there isn't enough demand for two of them a year. If they stop then I'll look at it again and if so your experience and assistance would be invaluable and much appreciated.