2. The chain is very easy to install "in one piece", nothing with ring, star, or so a nonsense as before with light bulbs.
3. In my Außendeko (1x Garland, 1xTannenbaum, each plastic) the green cables are also daytime almost invisible.
4. The transformer has as specified protection class IP44 - but I would try to accommodate him rain and snow protected.
5. In the current consumption I have found the first trade fairs as indicated only 12W at least almost 20W [Edit: Who measures measures Mist - see below]. I will again (considering power factor of the power supply) measure it with a better device and inform a possibly different result here.
6. For the competitive price in any case a real buy recommendation. Let's see how it looks with the durability.
Edi: I measured it again - 9,6W, so everything in absolute green area!