I cannot provide a specific authority to site, but, I have worked in a Big 6 accounting firms, doing tax compliance work etc. In my career, I have found that Board of Directors were directly reimbursed for out-of-pocket expenses for any lodging, meals and travel expenses incurred for attending Board Meetings in LA.
Thus, in your case, I suspect travel expenses paid would not be includable in 1099-Misc report. If you seek a more authorative site, I suggest that you contact the IRS! I can only suggest what I think is reasonable and what other Accounting Firms positions would be in this matter.