Don't go up there in the afternoon when the crowds are unbearable. It goes faster when you go up as part of the Red Bus Tour deal, you still have to beat the crowds on the peak and when you want to come back. There can be a two hour wait. Up there is a huge shopping centre on several floors. We walked down. That was the best experience. It takes an hour and goes through a kind of rain forest. Lovely. You will not suffer for the rest of your life when you have not seen the view. Especially during the summer it is anyway often in clouds.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.