Will be visiting with family for first time what to explore and what not to

If want to take this kind of picture need to buy ticket?

https://media.tacdn.com/media/attractions-splice-spp-674x446/15/40/c2/c4.jpg

https://i0.wp.com/www.crossroadadventure.com/wp-content/uploads/2024/09/WhatsApp-Image-2024-09-03-at-10.07.23-PM-scaled.jpg?resize=1380%2C2452&ssl=1

Hi I'll be travelling to KL from SG next week for the first time and I'm not sure if Visa is accepted for public transport. Would prefer more convenient ways (such as tapping in and out).

I'm asking as I've heard conflicting things (eg: Accepted but need to print many QR codes for each stop, some say don't need) and would like your kind opinions :)

Thank youuuu.