This often happens to me when I interact with Asian "face-saving" cultures, some South Americans that are really formal, and even some Americans who are really polite.
The general case is, imagine I want to make a genuine ask or offer and have it genuinely considered. The problem is, whatever I'm offering is unusual or not well-defined culturally or culturally just "not how it's done" to the person I'm offering/asking.
People often by default reject offers or kinda non-answer questions that are outside their cultural norms.
Specific example: Like Andre Agassi and Larry Bird, my back has always hurt. Since my teens, I've often preferred sleeping on the firm floor to a soft bed. I never sleep with a pillow. I also have an excellent relationship with my partner, and we are totally fine with sleeping apart, because we spend almost all our days together. "Who sleeps where?" is all too often a culturally-settled matter, rather than practically considered question of how to maximize everyone's collective preferences. Some cultures say old people get the best beds / rooms, lots of Latin cultures say couples get the best beds / rooms, etc. I might genuinely prefer to sleep on the floor on a yoga mat with a blanket vs a soft bed, as long as we're somewhere with climate control, reasonably clean floors, and no bugs. If another person/people would prefer the soft bed, group preferences are even further maximized by such an arrangement. Yet many people would be aghast at such an offer, because they culturally assume soft beds are better than nice hard supportive floors, couples have to sleep together every single night of their lives, elders must take the best beds, etc.
Is there any way to couch these sorts of offers or questions so that a person might seriously evaluate the offer, and genuinely consider my proposal or query, and understand that I will genuinely be happier with the culturally-unsanctioned alternative I'm proposing?
Other times, I want to offer money/time/effort, spend money/time/effort, or conserve money/time/effort in ways that certain cultures just don't comprehend.
What are general strategies for proposing culturally off-color ideas to people in persuasive, non-offensive ways?