No difference for 3, but there is a difference in the flow of people, which may vary during holidays.
The time to view the night view at Victoria Peak does not really differentiate between weekdays and weekends. If there is any difference, it is that there are more people on weekends, and the atmosphere is better.
No difference, but there might be more people during holidays, and there could be a queue for good photo spots.
No difference in 3, but there is a difference in人流, and there may be a difference during holidays.
The time to view the night view from Tai Ping Shan does not actually differ between weekdays and weekends. If there is any distinction, it is that there are more people on weekends, and the atmosphere is better.
There is no difference, but there may be more people during holidays, and you might need to queue for good photo spots.