the quickest way to frighten off a group of middle-aged tourists is to give them their money's worth of outdoor tour attractions on a rainy day at 8 degrees celsius after which there is every chance they will decide to cancel the next day's attractions and hare it out of the county on an earlier train.*
this brings to mind c. northcote parkinson's suggestion of an overdose of exhausting air travel as a strategy to persuade the senior civil servant voluntarily retire.
*3 national parks and a cruise then another national park and a museum, in addition to 2 full meals, all in 1 day.