Oh dear! What have I let you in for?! No, no: I'm sure you'll have lots of fun. We grandparents made a mistake with our girls of allowing one of them to be the banker. It would have been quicker and more peaceful if we had appointed a non-playing banker. It's the banker who controls the speed of the game - pays and receives money, properties and houses, keeps track of all mortgages, and gives consent to all deals between players. Good luck!