Covered flight for Center of Excellence

[curlgirl 18]

Very excited to have pre-approvals from insurance.For my program, I choose a Center of Excellence for 100% coverage. I also pay for flights, hotel, meals, and transport, and get reimbursed after submitting what is basically an expense report.

Does anyone else have experience with BCBSIL (or your own insurance) with what is covered or denied in the end as far as incidentals. The economy flight, can it be flexible? Can it be economy plus? The meal coverage, can it include alcohol (not for me of course)? What was your experience? What did you have to fight to get reimbursed on? What went through with out question?

I appreciate everyone's input. Thanks!