Our location is outside, with gravel paths. The area that we want to have the wedding in is kind of a work in progress right now, so while we can hope they will use something besides gravel, that's doubtful. That said, I want to make sure we have a good, sturdy aisle runner that the gravel can't tear to shreds. I tried googling outdoor aisle runners and didn't seem to get much of anything useful. If anyone knows of a good place to get something like this, or has ideas for a DIY version, that would be awesome!