In principle, any indoor location can be used, as long as you fit all the players in there. Make sure there are 9 places where you can hide a QR code the size of an A4. Think of the underside of a table or chair, the back of a door, etc. The more the teams really have...
Yes, that is possible. It is possible to have players fill out the questionnaire without knowing which game they are going to play. The questionnaire does not refer to the game. The players do receive an e-mail, but the e-mail doesn’t mention anything about the...