I was generally satisfied with the entire tour.
First, we went to the Blue Mosque, which was a bit congested, but we arrived in good time.
Next, we went to the Batu Cave, which was also no problem.
As for the Blue Mosque, a local volunteer guide was with us the whole time and gave us a very detailed explanation of the culture and the building. As for Batu Cave, there was no guide, but we could see him without any problem. I was a little worried about the stairs because they looked very steep, but because I climbed slowly, I could get there without any problem. There were so many monkeys that I had no problem at all because they were very gentle.
The best part of the tour was that Richard, our guide, taught us many things along the way, which were very useful for us.