You enter Martha's, sit and buy a drink, and a TS comes to sit with you. Then, a mesero passes a plate around for tips. When the plate has hit its $ goal, they start the show. There are no programs, show times, or schedules. They may have the show 5 times in a night or none at all, depending on how many suckers they can lure into the building and how much the money plate fills.
Once, I took a small group of newbies down there and they were dying to see the show just to say they saw it (despite my objections, I've already seen this show several times). We, and another group of waiting gringos, all scrounged up $40 USD for the plate and they gave us the show.
From what I understand from legendary mongerers, the show used to only have one donkey lady (they called her the pig lady b/c she was a short, fat, snout-nosed whore) and used to be real. I'm sure a few legends on this site can confirm/deny this. But, now, it's a toss-up to the ladies for who does the show and it is entirely fake, as you will see when she covers the donkey dick w/ a cloth and the lights go out.
BTW, the older donkey died this year. He was replaced by a young donkey, probably half the size of the original. No doubt they've gone through many donkeys over the years. The new one is tiny and doesn't seem to have much life to him. However, the older one used to kick and scream when brought into the bar and nearly kicked me one time when he was getting flipped over for "fucky fucky sucky sucky". And he used to have convulsions, saddest shit you will ever see. It was an obvious indicator he was ready to die.
Hope this info. was helpful. Have fun at the show, PervertedCecil!