Well, here's from a semi-veteran: you won't have the strength to do anything else
I've been to PP 01, 03, 04, 05, and 06 (I blame skipping 02 on FINLAND), and it's pretty much always been the same: get up, go watch bands (don't think that you can skip the early bands; Rene is great at hiding real jewels in the first couple of slots) (he does it because he HATES us). Between bands you have to hurry to talk to all the awesome people and maybe even drink a beer still. During the lunch break, well, you LUNCH (secret tip: there's a Chinese restaurant by the main street of Baarlo which is just insanely good and has an all you can eat buffet), and hurry back not to miss THE FIRST FORTY-FIVE MINUTES OF GREEN CARNATION BECAUSE THE STAFF AT THE *OTHER* CHINESE RESTAURANT TOOK FOREVER TO BRING YOU YOUR FOOD (still angry about that one) (guess you can tell ;P) After lunch, things get hectic. Now if you want to actually see something, you basically can't move away from your spot by the stage anymore. At least during the last two bands of a day you MUST have someone keeping your spot or else you're watching from the back of the crowd. My feet have left two size 47 indentations in front of the stage from all the years of just STAYING there. Still, you will want to move around, talk to people, get drunk, etc. You'll be busy.
The bands finish around midnight. Theoretically there should be an afterparty in the Shijwa (or however these crazy Dutch people spell that ;P), but I've found those afterparties to be quite a disappointment in recent years. In short: there are no afterparties. Within 10 minutes of the last band finishing, the bar becomes completely empty. But there IS an afterparty...
And it happens at the Kasteel. Ever since Rene started offering package deals for the Kasteel and PP, that youth hostel has become the site of legendary debauchery after the concerts (especially if your next-door neighbors are RUSSIANS) (trust me) (speaking of which, Rene, you need to give me bank information for where I should send the BRIBE to you so that you'll give us the room next to Mechanical Poet this year >
). You will not get to bed before 4am, and that will make getting up in time for the concerts the next day hard, and getting up early enough to do something ELSE before the concerts impossible.
Any more questions? ;P