Q. My husband and I have spent many happy weekends in the seaside cottage of long-standing friends. Knowing how much we love it there, they have suggested that when they go away on a forthcoming long trip abroad, we should leave the city and move into their cottage. We are hesitating because they have cameras both inside and outside the cottage and, as they often mention how being able to view the footage puts their minds at ease wherever they are in the world, we are certain they will be tempted to check up on us if we stay there....