She thought for a moment. Her mind tended to go for the detailed excuse.

"I'm your niece and we're on holiday and we think we dropped our camera, have you seen it? You have to throw in the niece bit, they'll be more...sympathetic. Unless it's a grumpy old man who hates little children and puppies."

She paused. "Or we could just tell them to have a fantastic day, but they might think us odd. That's not unusual for me."

She smiled to herself a bit.