EXACTLY!!! Bosses are typically all about efficiency and they are going to hate useless, pointless, beligerent questions from whomever (accounting, travel, HR, payroll, whomever hands it touches). I've had bosses suggest things to "avoid questions" and, as a boss, I've likely done the same thing.

The types of questions I'm trying to avoid are the ones that come from 2nd year dweebs that just know that everyone who travels is ripping off the company by eating caviar and getting personal escorts every night!

Personally, I'm a strong believer in Per Diems. I don't even care about how much it is - give me $25, $35, $45 / day for meals and incidentals and I'll easily live within that budget - and probably make a little tax-free income from it. Its simple, easy and prevents any temptation to disguise legitmate expenses in an expense report. Even the 2nd year dweebs can't screw up $35 for 5 days... yep, $175 again this week!