The forecast for Hartwell looks like 50's and 60's.
Okay, then I just have one question: Is Nigel's pool heated for that Thursday night party? Or will it be an opportunity to test drysuits and wetsuits for relative comfort level while immersed?

Maybe a contest to see who can stay in the pool the longest, so we can have a "consumer reports" kind of thing about it.
We are planning to be there as early as we can on Thursday.