I don't care about the winter part really - just the hot tub part. I have been in a hot tub when it was freezing outside, but it wasn't winter. And I've swum in a heated pool during winter. So I'm going to count this one as an accomplishment.
Say ahhhh. Go for a luxurious soak in a private natural hot springs tub for two at Sycamore Mineral Springs, located in Avila Beach near San Luis Obispo, CA. (Wine and beer may be purchased in the Gift Shop to take up to the hot tub.
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Glow sticks in the pool, great for night swimming! Not sure this would be the best idea for a big in ground pool (would probably take a couple hundred sticks), but would definitely be cool in a kid pool or an above ground pool!
This would be so stinking fun at Lake Powell (at night, not during the day) The boys can get a Blob and us girls can get a hot tug! The HotTug is a motorized hot tub boat available to own or rent. SHUT UP AND TAKE MY MONEY!