I'm from Cianjur, West Java and live in Bandung, West Java. I have visited many places in Indonesia, like East Sumba, Wajo (South of Sulawesi), Padang (West Sumatera), Balikpapan (East Kalimantan), etc. Especially in West Java, i have been to Bekasi, Bogor, Subang, Purwakarta, Cirebon, Indramayu, Sumedang, Garut, Tasikmalaya, Banjar, Sukabumi, and of course Cianjur and Bandung.
I have knowledge about culture and people in Indonesia depend on their ethnic.
So i can help with my experience for your work.