Separate atmosphere, startles, darkness, and actor pressure before you book.
Scary is not one thing
Some rooms are spooky because of darkness and sound. Some use actors, pursuit, gore, or jump scares. Others simply carry an eerie story. Before booking, work out which kind of tension your group wants and which kind will shut people down.
Ask the group directly
Do not assume everyone enjoys fear in the same way. A player who likes a creepy set may hate being chased. A player who enjoys horror films may still dislike being touched or separated. A quick honest check prevents a lot of awkwardness on the night.
Balance scares with playability
The best scary rooms still let players think. If the fear makes communication impossible, it becomes a different kind of experience. Choose higher scare levels when the group wants performance pressure as much as puzzle solving.
