In the following escape rooms in Portsmouth (OH), 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.

As the new recruits of Precinct 740, you will be assisting with our most critical case. We have a serial bomber in the area. You must work to find the bomber and prevent any more casualties.
Welcome to Castle Dracula. Built in the 1300s, it has seen war and turmoil, but is most famous for being the historic residence of Count Dracula, a mysterious figure with a thirst for human blood and a legend of immortality.