*the last 2 years it has opened the thursday before the fest, and closed the monday after the fest, I don't think there would be many people there if they opened more than that yet, it's not big enough yet.
*According to what I've read is the French forum, the camping area will be very close the the site this year (5 min walking). I just saw your fear of n°2 in another topic : the organisation said they would do a great effort regarding toilets and showers this year. There is a big supermarket nearby where you can do some shopping and a McDonald's where you can have a dump.
*this is not a big festival. Nothing to compare with WOA.
The capacity allowed on the festival site is about 14,000 per day.