um, completely forgot how to get showtime shows/simfests to show up? which venues?

I usually see Sim Fests at the Showtime Performance Park. I don't look for them though and tend to ignore them. I just place the park, it came with Showtime, and forget about it. I really only use it if I have a sim in a performance career and usually send my sim there to ask the proprietor to enter the career.