3 days / 2 nights camping. Do I need to book? GPS track

Hi guys,
I just gave up to go in Kaeng Krachan, because it seems they closed the way after the 18th km.
I'm thinking about Khao Yai. I'm wondering if I need to book for the camp site or if I can just go and set my tent.
Do I need a permit? If yes, where can I have it?
Which camp do you think is better for panoramas or wildlife?

Also, I saw some GPS track and I would thank for that, they are always very helpful. They are just a bit old, do you know if they are still reliable? Does someone have something else to share?

THank you guys
Enjoy your trips

Kaeng Krachan is now closed till 1st November.

Khao yai, Just arrive and pay entrance fee no need to book, there are 2 camp sites Lum Ta Kong and Pha Kluai Mai, set up your tent anywhere in either.

Lum Ta Kong is probably the best with good toilets and showers, as the trail from Pha Kluai Mai to the waterfall is closed.

Plenty of deer around the campsites with monkeys and possibly birds on the roads, possibly other wildlife at the watchtower, best panoramas would be the Phu Diew Dai viewpoint.

You will be given a map when you enter the park, GPS marks will be accurate, a compass or GPS is very useful.

There are leaches on some of the trails at this time of the year, the 33km and watchtower trails should be leach free.

Weekends and holidays can be crowded.

Have a great time and stay safe.

Robby