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Alistair
Just read your post and well done on getting the scope out to a dark site. It certainly makes a difference.
Just a couple of comments. Firstly, you mentioned having a few drinks of whisky. I normally advise against alcohol if doing any serious observing. One obvious reason is that using valuable gear in the dark and drinking are not a good combination, secondly, alcohol increases our susceptibility to cold. It may feel like it is warming us but it is actually causing us to lose heat quicker. Thirdly, and most importantly, alcohol is detrimental to dark adaption. This is not to say that observing cannot be accompanied by a little light drinking, just be aware of its effects.
Also you noted the dew conditions. The most valuable accessories I purchased have been dew heaters and controllers. Especially one for the secondary mirror and the eyepiece. Can also be very useful on the finder! If setup right can enable you to keep going worry free without stopping to use a hair dryer!
Cheers and clear skies!
Malcolm
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