Cheers MrsM.
As I had the stamps in my passports to show I'd been to the Philippines and I had pictures of us obviously in the Philippines together (ie stood in front of the Mall of Asia, etc), I admittedly never bothered to keep ticket stubs as I didn't see the point with having the other 2 things.
But over the last 12 months, I kept seeing the same point stressed and I got a little nervous thinking I might be missing something important other than the obvious proving you've met!