Hi ! First of all the cover art is amazing, it really stands out and invokes an interesting atmosphere. I was looking forward to playing this.
The music and sound design is perfect, it really sets the mood. Some more sound effects like for dialogue text and interactions with objects, as well as footsteps and in game sounds would've elevated this even more. The maps look amazing as well, I really loved them, especially the camp.
I like the creative placing of the text boxes ! it's really dynamic and compact. Speaking of text though, the characters could use a bit more work. They weren't really distinguishable by their speech or personality, so if I didn't see the face of who's talking it could've been anyone because they all speak the same. The only time they showed personality was during the ghost stories scene in the camp, which was cute and I wish there was more moments like that so we got to see them being friends.
Personally I think having less characters and focusing more on each of them would make it easier to make them distinguished and each of them more memorable. Design wise, all the girls look great, but it's a shame their partners look exactly like them with shorter hair. Try playing around with male designs more, there's a lot of fun stuff you can do.
As someone else mentioned, the uploaded game can't be played past them leaving the camp, so sadly I didn't see the plot further or different endings. I noticed later you updated that so I'll check it out some other time !
I like exploring everything on the map and clicking everything that seems like it could have an interaction, but unfortunately there isn't anything to click unless it's needed for the game to progress. I went through all the hotel rooms and couldn't explore until it was time for me to find the key, which is a shame and seems like a lot of unused space for fun things. This could've also helped the character personality problem, each persons room could tell us something about them if we explore. Little things like that help a lot.
The concept itself is really interesting, but currently (as I wasn't able to finish the game so I can't say if this changes) feels a bit under explored. There's a lot of fun stuff you could do with this idea, and I think you could easily find interesting scenarios if you brainstormed a bit more.
Overall, very charming game, a nice idea with a lot of potential. Good job on making this in such a short time, and I'm excited to see how you grow further !