One of the most important aspects of the show is the cost - to attend, audience members only need to pay a koha (donation), which he says doesn't necessarily mean a cash donation.
"We would be keen for anything ... we need everything," Williams said.
He said because of the low cost of the show there wasn't much of a risk of people losing too much from attending.
"If you don't like it then chuck 20 cents in the bin."
Williams, 25, said "It's going to be an absolute shambles of a show."
Williams said he would do everything he could to get a laugh out of the audience. He said if the crowd didn't think he was funny, he wouldn't stop until they did.
Three things you may not know about Williams include - he's terrified of Zorbing, he doesn't want to mock Rotorua's fart smell and he is a loose cannon.
Williams, who ultimately wants to have his own New Zealand version of Carson Daly's late-night talk show, encouraged Rotorua residents to head along to the Linton Park Community Centre on Saturday which "could be the greatest show on earth".
Meanwhile, Williams was also keen to hear from Tauranga and Rotorua locals who wanted to showcase their own comedy skills as the warm up act.
He said they were searching for a local opening act to perform in each city and there was only one pre-requisite - they had to be pretty funny.
To confirm a booking or find out more about the warm up act for the Guy and Rose National Tour of the Nation, email them.