Is everything still open when Low Season starts (on Dec 15)

I will be in Leshan on 15 December. Low season starts that day. Is everything at Mt Emei still open?

I would like to visit the mountain for the day but need to be back at my hotel around 1800. Are the cable cars still operating normally or should I allow extra time because it is low season? At what time do you suggest I arrive in order to see the main attractions and return in time?

Are all the temples open? I notice on the guide that opening hours are only given for High season.

I assume it will be quite cold on the mountain. Is that correct?

Thanks!