I’m done

Speaking for America: It’s actually very easy. If you ever throw an event- or have attended one like a concert, carnival, motor sports event or race, etc. Most places and most insurance companies for the event require an ambulance and or medical tent on site (depending on venue etc.) If you notice most ambulances have a logo on the side. That’s the company that owns the ambulance. Just like you pay for a ride in an ambulance you can just rent the thing out. It would likely be cheaper for something like this (depending where you live) to rent from some sort of company that provides for films etc since you don’t need a real one or EMTs.

No one can say. You’re only “missing out” if you want to do something and don’t. Prom is the formal event of most high schools and for many its a sort of last chance to be that age and with all their friends and class mates at once. It’s a dance. There’s music and sometimes food and drinks. You dress up. You talk and dance. There might be awards and speeches. It is one night and whatever money you want to pay for tickets, transport, clothes, etc. It’s significance is in your head. You are the only one who can decide if prom is a big deal to you, and if you think you’d enjoy it....

... but here is the catch- it can be a cultural touchstone. It can be something you don’t think you’ll enjoy and you do, or you don’t think will mean anything to you but later on when you are older the memories we look back on as significant aren’t always the things we thought were a big deal at the time. So you might not care or think you’ll care now and then care later. So- wether you think you’ll care or not... if you aren’t doing anything else that night better, and the cost isn’t too much for you, it’s safer to go and not have your mind blown than to stay at home like you could any night at any age and then regret it.

In short- it’s on you. If you can’t or simply don’t want to go it isn’t the end of the world. It’s a high school dance. There are cultures that don’t have prom as part of it. They grow up just fine and don’t regret not going because they never built it up in their mind as anything significant, might not have ever heard of prom. If you’re prone to regrets and “fomo” then going if you can to save yourself that later might be prudent. Go if you want, don’t go if you don’t- mostly you miss some possible memories and having prom stories to tell (which don’t tend to come up often as an adult...)