😂😂😂 You don't know anyone who has outdoor Christmas lights?! All the LOLz!
We have a load of them. Five fir trees outside - 7 to 10 feet tall - and we have lights all over them (polar white/soft white:) 300 on each one. (All electric.) Also, sets of colour and soft white battery lights on around 10 bushes around the garden - front and side . (Sets of 50, 70, and 100.)
We have lights on the indoor 7 foot Christmas tree (of course,) and a set of battery lights in every front and side window. (Mixture of colour, white, and blue...) Also, we have a set of electric lights on the front of the house (50 - large bulbs, soft pastel colours.) And, a set of 25 red battery lights in the front window with a Christmas scene ornament all lit up in red, gold, and green.
We have them on from 4.30pm to 8.30pm. 4 hours. Would have them on longer, but we have so many that the electric bill would be much higher if we had the electric ones on for say, 8 hours. Also, the batteries (on the battery ones) would wear out quicker. 4 hours is cool though, as most people are in/home from school/college/work/the shops by 7.30pm. 8.00pm at the latest.