Our house is on the lake and we have a large yard and covered dock. I told them the guests were walking around through our yard (and our neighbor's yard because they didn't know the property lines), and even out onto our dock without permission. Not to mention we had other guests staying at the time who actually paid for this weekend.
I even spoke with the "supervisor" of level one support and she informed me she didn't feel there was anything to report because the guests had done nothing wrong. I told her how uncomfortable this made us and she said, "if a guest has paid to stay at your house they get your address so they can come anytime and look at it"
She also said we could cancel but there would be penalties for us as hosts.