Parents aren't so different from their kids all the time. Sometimes, the biggest thing that they don't like is the unknown. They may say no to a sleepover because they don't know what to expect, and picture ten kids having a crazy pillow fight and ruining all of their antique furniture. If you want to ease their worries that nothing horrible will go wrong, then the best thing you can do is to tell them exactly what the night would look like.  Here's what they'll need to know:  How many people are invited (example statement: “4 friends are coming over tonight.”) What you'll be eating (example statement: “We will be eating popcorn, chicken, and burgers.” What movies, if any, you'll watch (example statement: “We are gonna be watching Inside Out.”) Where your friends will be sleeping (example statement: “My friends will be sleeping in the bedroom 2 doors away from the kitchen.”) What time they'll arrive and when they'll leave (example statement: “My friends will enter at 4:30PM today and leave 2:15PM tomorrow.”) Another reason your parents may not want you to have a sleepover is because they can already picture themselves making a big dinner and having to clean up a big huge mess in the morning. They may also be worried about cleaning the house so it's presentable to your friends and their parents. Tell them that you'll do all of the cleaning before and after and that you'll make sure your friends won't make a big mess. Also, say that you'll do something simple and cheap like ordering pizza so they won't feel like they have to do a million things to keep your friends happy. Once you make it clear that your parents won't have to do a ton of the work, they'll be more likely to let the sleepover happen. They'll also be impressed that you're taking so much initiative and showing responsibility. If your parents haven't met the friends that you want to sleep over yet, then you should invite them by so that your parents see that they're nice, normal people who can be trusted to stay the night. Invite your friends to a...

TL;DR in Indonesian:
Beri mereka gambaran rencana Anda, agar tahu apa yang akan terjadi selama kegiatan menginap. Katakan bahwa Anda akan melakukan semua (atau sebagian besar) pekerjaan yang harus dilakukan. Pertemukan orangtua dengan teman-teman Anda sebelum mereka menginap. Katakan bahwa orangtua boleh mengecek kapan saja, selama teman-teman menginap.