Well - this is very interesting what i was reading on the Internet Pinball Database: This was the last Williams 4-player game to use a ball lift. And this was the first Williams 4-player game with four score reels for scoring and with the center 5-ball captive ball looping feature.
Really cool!
I couldn't remember having seen "Whoopee" here in germany before. So it was clear i have to buy it when a well-known guy offered it to me. Had big trouble with the Bonus Lights on the Playfield. They won't lit. Reason why was that someone had removed the original ground wire for these 5 lights so that i connected it to a wrong ground line. Always the same on this old machines. Often someone with low knowledge had done worse things. But now it is fully working and we are having a lot of fun here in summer 2023 while playing this 1960s masterpiece. Greetings from germany.