Same, I'm so excited about the setlist! I hope they keep at least a couple of rarities in the set even though it's a festival gig.
A couple camping tips: take earplugs, don't pitch yout tent near the toilets (common sense really ) or near a fence, and if you plan to shower, go either very early in the morning, very late at night (I think last year the showers were open till 2am), or in the early evening when most people are on the festival grounds (although there are a lot of showers in The Hive so it's faster than it used to be). Also make you tent recognizable!! The Hive is huge (I think last year there were 30 000 people in there) so this is super important.
As for general tips, I'd say definitely read/pay attention to what you can and cannot take with you in the camping and in the festival itself because they tend to be fairly strict about it. For instance you can't have any glass containers with you, and they don't always let you in the festival with bottled drinks (I think they let closed bottled drinks in last year but they used not to so I don't know what the rules will be this year). And if you're front row and it's hot, security will usually fill your bottle with water if you ask and they sometimes give out cups of water as well.
Other than that, take sunscreen and wellies, chances are you'll need both