I have a quote for you about it, someone recalling the night Marlon Brando turned up at The Tropicana:

"The night in question, Marlon Brando rolled into the Shanghai with the two showgirls and Cabrera Infante and Sungo Carrera in his wake. The Shanghai featured live sex shows with a man known as Superman. He was famous for having an 18-inch erect penis. I heard he’d first have sex with a performer onstage, and then he’d invite a woman up from the audience to do it with him. He’d wrap a towel around the base of his cock and see how far he could go in. That night, I’m told, Brando wanted to meet him. They were introduced, and Brando dumped the two showgirls and took off with Superman"- Rosa Lowinger.

I believe it is mentioned in her book Tropicana Nights but the above is taken from a Vanity Fair article a few years back on the impact of The Tropicana. Link as follows: https://www.vanityfair.com/culture/2011/09/tropicana-201109/amp

Hope that helps and for the record- this is the oddest reply I’ve ever given on this forum.