@dlowan,
I've said this before on ak2, but, so..
my husband and I went to death valley in (I think it was) july, or late june. Almost no one else visible around for many miles. We stayed at the cheapo place related to the main hotel for low money. But.. by virtue of that, we got to use the hotel pool. And we did. I remember finally relaxing that no one was going to throw us out, and getting into the warm and nice pool (never mind the architecture, you know me). It turned out that bats flew over us repeatedly but I never saw them, which was good or I might have drowned myself.