You're totally safe then, in the best possible hands and the security at the hotels is great - and they are amazingly sweet and friendly!
Coming from Houston - dress in layers, it's likely to be chilly for you. I'd go with jeans/pants for the most part and layers with tops. December for us (now we're in Colorado but were in No.Cal a year ago) was still cold and we wore our coats and pants and sweatshirts. A few times we got down to just one shirt but that was it. The breezes and shade of the gorgeous trees make it extra cold in spots.
Swimming - the pools are heated (not to MY preference but definitely heated!) So, that's going to be a personal choice there. Even after a year back in Colorado with blizzards, I can't do it. But, go figure, in October I usually do swim with my little one.