The place is sooo huge, you dont have to enter with Grab because there are extra fees for transportation to go in. And you can rent a scooter for 50,000rupees for 1 hour. Theres so many spot for you to take pics, the environment is safe and organised. Helpful and friendly staff. Highly recommended

So first of all get a SIM card to get internet there if you are planning on staying more then 2weeks in Indonesia. It's worth it. Second instal the app "Grab" best way and more fair way to go around Jakarta.
Go there it's 40.000 for 2 persons. Then you kind have 3 choices. Go by foot (at least 4 to 6hours walking) go by bicycle/motobicycle (takes 3 to 5hours) you take time to see each part of Indonesia what you loose time it's going to each zone. The third it's going by cable car (80.000 IDR I think) Then you are high and you can see a lot in 20 min and chose.
By the way be careful you are not in Ramadan half of it it's closed.
The reptile museum it's ok to go ;)

Beautiful Indonesia in Miniature Park (TMII) is a tourism complex with Indonesian theme on 150 hectare land. In TMII, there is a miniature from each tribe whom has more than one traditional houses. The house architecture is designed from the tribes from 33 provinces of Indonesia.
The area is divided on different them on 6 zones: Java, Sumatra, Kalimantan, Sulawesi, Bali and Nusa tenggara, Maluku and Papua. I could say TMII is representing of Indonesian cultures and a good place to learn of the cultures.
Over all, TMII is a very good theme park place.