Hosting: Hosting this mystery is quite easy. The host coordinates and sends out the invites, assigns characters and coordinates the rounds (basically giving out the information to each character and ensuring everyone has an opportunity to talk or do their tasks before moving on to the next round). Decorating is quite easy as well - just make your house messy to make it look like you live in a dumpy trailer park (no offense to people who live in mobile homes/trailers - they can be very nice - but that's the stereotype the game is going for). Some ideas: Our washing machine just broke so out on the front lawn it went. The game instructions contain other ideas for a decoration and menu which matches the theme.
Characters: The characters are fun and easy to play. You don't need to spend a lot to make a costume for your character and will likely have some clothes that can work in your wardrobe already. A few bucks at a thrift store and you'd really be looking the part. None of the characters are so outrageous that people would feel uncomfortable playing them. There are 8 main characters and 6 optional characters. This is a huge PRO as you can invite 14 people and if some decline or don't show up you can still play the game. Other mysteries you have to have exactly 8 and if one doesn't show you can't do it.
Difficulty: No spoilers here. I consider our group who played to be average. We took the characters seriously and made sure we did everything we were supposed to. But we didn't sit there with pen and paper taking notes. Our group had a good time eating, drinking , and talking through the night. When whodunit time came the solution made sense and everyone went "ooooh". But nobody was close to guessing who the murderer was - to guess correctly you really need to pay attention and take notes (in my opinion).
Replay Value: None once you know who did it. Give it to a friend or trade it here on BGG.