@Dave *********
I had great experience with female officers at the local immigration offices, they work nice. However, at the airport I heard many people were scolded by female officers. In my case my 60 page US passport had many thai immigration stamps and visas in the past 5 years. But only one land crossing and 1 tourist visa in that year. I came for visa exempt entry. She scolded me for too many thai visa on my passport and called a senior guy. He was kind and sorted out the issue and I entered.