When comes to "oversleeping" I treat my guys the same way I treat guests at my home  - they can stay in the bed as long as they want but can't expect me to limit my daytime activities.

So at breakfast time they have choice of going with me or staying in the bed until I return. They were takers for either option.

I don't have problem leaving boy alone in my room perhaps because I never  had anything missing. That's a big part of Thailand's charm for me

They are effectively "night shift" workers, and therefore sleeping later into the day is just the way it is.  It's only fair and appropriate to understand that.  

When I do find a guy who is more of a daytime person, he quickly moves into the "keeper" category.