In the following escape rooms in Frederick, you must purchase the entire experience at once. You'll only play with the members of your own team and won't be paired with strangers.
The only requirement is to meet the minimum number of players for the room — the price is usually set for the room itself, though it can also depend on the number of players.

A wicked witch you must defy, break her curse - escape or die
You must sneak into the mob's office and retrieve the stolen diamond!
White team vs. Black team, only one team gets hired, the other team gets kicked out of the academy!
You’ve taken a tour of the Cell Block 1 experience. The unenthusiastic tour guide tells you about the history of the old cells.
Restore, Defend, and Prevent Extinction on Space Station Tiberia!
Hungry dinosaurs? Best beware! Find the eggs - it's a jungle out there
Journey to the North Pole. Stop Slappy the Elf. Restore Christmas Magic.