Make sure you preface your request by asking that people only choose party-specific songs (or whatever other preference you have).
Also, have a bunch of your own party songs pre-loaded on the play-list to give people an idea of mood/genre.
Disclaimer: For many people, this is an LPT for post COVID. I hope everyone is keeping safe in the meantime.
Regarding the risk of people adding silly songs to the playlist / adding duplicate songs: ensure you do an audit on the day of the party, and lock the playlist so no-one can make further edits.
If you are concerned with what the flow of music at the party will be like: ask people to stick to a couple of specific genres.
Regarding 'giving people homework' before a party: you don't have to make it compulsory.
Because they had to go home and change first.
Edit: Wow, I didn't expect so much response from this post. Thank you for all of the engagement, upvotes, and rewards! There is a diverse range of opinion on this thread, which has been very interesting to keep up with. Thanks again to everyone.
I (30M) live in a nice little neighborhood, everyone knows everybody, we all have our own space and many have flower gardens. I have a green house in my backyard that is visible from the street and behind a four foot picket fence.
We got a new neighbor, haven't had the chance to meet them until today. I have a camera in my yard that notified me of movement near the green house so I went and checked and that's when I found a lady and young teen picking tomatoes and peppers in my green house. I raised my voice and asked what on earth they were doing and the woman says it's fine she's friends with the owner.
I asked if she wants to run that by me again cause in the owner and I don't know who the hell they are. When she realized she was caught she tried to leave with a bag full of vegetables, I told her she isn't leaving with that food and she has two minutes to drop it and leave or I'm pressing charges.
She starts crying that she's trying to feed her child and needs it and that she can't afford this on her record but I didn't feel like rewarding a theft and took the food from her and called the cops. She's telling everyone im an asshole and a toxic man and though most are telling her she's in the wrong, her friends on facebook are telling me I'm an asshole and should be ashamed.
Edited for information: when she was offered the chance to leave without police involvement she screamed at me and broke a pot that had some chives growing.
I don't have her on facebook. However my name is on my mail box and have since put my account to private. If she had asked first, by all means I would have given her a couple peppers, tomatoes even some squash, but she didn't.