Based on this : The special meals and incidental expenses rates for taxpayers in the transportation industry are $66 what are your calculations to get to $35000? 365*66= 24090. And 80% of that is 19272.
Your allowed a lodging per diem as well. Variable by location. Some are as high as $80 night. Fire your accountant and get a real one.
I was asking a question as to how you got to $35000 Per Diem....which is a specific SCH C line item. so yes, i have no idea.