Uhm. Yes. Yes, I have. I’m non-denominational when it comes to alcohol, but I do have a weakness for 日本酒.
I drink 冷酒 much, much more frequently. There’s little point in drinking the good stuff heated. You lose most of the subtle flavors once it’s warmed up.
熱燗 adds a nice vibe, though, and is great on a cold winter evening:
ふりがな can be added with the <ruby> tag in html. But there is also a nice user script for the forums to add it more easily.