@Terry *******
You are guinuine tourists , not doing extensions , or border runs and you leave after a couple of weeks each time and return to your home country . Should have no problems at all . Just ensure you have a ticket out ,
*****
baht or equivelent in Aussi Dollars or any other currency and proof of accommodation . Then enjoy your hols .
They "might" tell you to get an MTV in future , but wont stop you entering this time imo .