One important thing to note is that everyone needs a Permit to enter Arunachal Pradesh.
All non-Arunachali Indians need an Inner Line Permit whereas the foreigners needs a Protected Area Permit to enter the state of Arunachal Pradesh.
If you have chosen a package, then you can ask the package coordinator to get your ILP otherwise you will need to apply for it yourself. Thankfully, there is an online process available. So, you simply need to pay Rs 100 and fill in the duration of your stay, places you are planning to visit in Arunachal Pradesh, upload a photograph, and upload a scanned official document.
And you will get your ILP instantly.
Where to stay
Since ZFM has become quite popular in the past couple of years, there are a lot of accommodation options available near the festival grounds.
Bring Your Own Tents