@Damien **********
I think the more your behaviour looks like living in Thailand, the more risk you have IO does not like.
As long as you comply to all visa requirements they have no good reason to stop you, but they know you cannot force your rights.
But even that sometimes does not work. Before DTV when I was in Thailand on 60 day visa exempt and around day 40 we wanted to visit Malaysia for just 1 day because that is within 100 km from where we live, the IO in Pedang Besar refused to let me in because "same day in and out we don't do at this border crossing"
I never found an official rule anywhere that same day in and out is not allowed, but for IO it is a moment to decide if you get new visa exempt, and for DTV the IO also can decide not to let you enter.