Typical Teenage Bullshit, What Do I Do?

This is honestly so trivial, but I’d really like input on what to do cause it’s stressing me out.

I’m 18, my boyfriend is 19 - the legal drinking age is 18 here so we drink.

His parents are away, so naturally we decide to take advantage of this and have a party.

It was originally planned Friday, but my SO has an important thing on Saturday morning so I moved it to Saturday night last minute which was completely fine.

He was supposed to work Saturday night, but decided not to so he could join in on the fun.

We have about 30 people coming, all really good friends. We all know how to hold our drink and it will be under control.

However, his 17 year old sister (grade 11, so her friends are all 16-17) announced she’s having about 40 people over...she thought we would be out.

So now there’s about 70 people coming and her friends will surely be messy as they’re still young...

My boyfriend is really worried about the number, naturally.

But now he’s additionally added he might be going to work from 7pm-11pm which COMPLETELY defeats the entire purpose of the party? If he would have told me I wouldn’t have planned this party at all...what’s the point of having it at HIS house with him NOT there??

I’m honestly at a loss, my boyfriend says he’s not mad and I don’t think he is but I feel bad that he’s stressed about how many people are in his house and I feel horrible about him potentially not being there.

I do have an idea - I have everyone over as planned, as a ‘pre drinking’ thing, and go clubbing at around 11? That way boyfriend can go out, his sister can have the house, and there’s 30 less people there...

Or I just cancel? I’m not sure.