Its a fun time and extremely challenging. If they have different rooms that have different difficulty levels then yes, i strongly recommend it. If not, it might not be as fun for your 12 year old.
Probably not, however they could always join another group if there are spaces left. Weekends are a great time to join another group and get the most out of the experience. However, you are always welcome to book a show and we will help guide you. You may not win but you will have fun. We do have a secret work around for small groups for the games.
I have to say probably not. They purposefully designed the stage that multiple players have to contribute to solve the puzzles. Unless you guys have more than 2 arms, I say it will be difficult.
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