I would love a sleepover event. Where children ZOIs can have a sleepover party OR grand-parents coming over and sleeping over, or Friends coming over for the NIGHT. AKA: not dedicated to younger stages but for ALL.
In addition, to having portable sleeping bags, suitcases which acts as bags, etc.
I really want sleepover events as well. I hope it is not locked to children only, because adults should also be able to have sleepovers with their friends. You are never too old for a sleepover.
Oh, we have sleepovers already in the game.
Random uninvited Zois turn up at any odd hours, cook from our Zoi’s refrigerator, use the comp, snooze and sleep.
Devs read your mind.
Their command is now your wish 
You’re never too old for a sleep over indeed! I completely support adding a sleepover event.
Sleepovers could be an event like parties or weddings