No shows are very rare here, late by 1/2 hour not uncommon as the beds are very comfortable ... What we do get is people returning late when we are not on deck and telling us in the morning that they will be having breakfast in town with friends they met. OK, its part of the service. People expect to be catered to, some way more than others as we all know.
Breakfast should be nourishing, but mainly it is part of the experience and should not turn into a social obligation -- that is a B&B negative for folk. I think our younger market is apprehensive of having to do stuff, including showing up for breakfast, a meal they rarely eat in a conventional way anymore. It is an optional treat for a generation that usually "opts" at the last minute..