My parents who are in their late seventies say that when they went on holiday as children and stayed in a B&B, their parents, and other families would take the child of the B&B owners for the day. They say this was common as B&Bs then were full board i.e. provided three meals a day, so visiting families recognised it was a hard life for the owners and they rarely had any time to take their own children out for the day. So the children would be taken out by friendly families who were paying guests.
Anyone else remember this? Of course it would never happen now.