TedStixon

Answer: The movie establishes, pretty quickly, that it doesn't necessarily follow real-world logic and physics, and plays fast and loose with them. After all, it's a world where humans and cartoons co-exist side-by-side. Lots of things happen by pure dumb luck, etc. It would stand to reason that Eddie could survive silly things like being hit in the head with a bowling ball, etc. You could also make the argument that the Acme factory could follow cartoon logic, especially as it seems to be literally right next to Toon Town (they even cut a hole in the wall directly to Toon Town) and was run by a man who loved the Toons.

TedStixon

Answer: During Prohibition, which lasted throughout the 20's and early 30's, alcoholic beverages were effectively entirely banned in the US. Illicit, illegal places (often referred to as a "speakeasy" or "rotgut room") were created where people could drink alcohol on the down low. They were often secret establishments or hidden areas within another business. The secret room in the bar is one such room. The reason there are peepholes in the room is so they could keep an eye out for unwanted company (aka, the police or other authorities) while people illegally drank. If they saw the police coming, they could hide the booze and try to find a way to sneak out.

TedStixon