Just got back from Lisbon. The night before our flight I got food poisoning to the point there was no way I was going to fly at 5 am to Charles DeGaul in Paris. My wife called Delta and changed our flight to the following day. Cost $600. Luckily we had trip insurance. My wife asked Delta if we needed evidence from a doctor. Delta said no. Where am I going to find a doctor in Lisbon anyway. It’s going to be a challenge and I’m feeling like crap. So we file the claim and of course it’s rejected as of now.