No bubbles (waterproofing)
No walking between tents in a family group or between tent and their chairs : it’s like walking through someone’s house.
Teach your kids this. They must never ever be close enough to anyone else’s Tent to be tripping over their guy ropes.
Be considerate about BBQ smoke. Note wind direction, and plan accordingly.
Note the site rules. If it says no amplified music then you can expect people not to Be playing their ‘barely audible except for the irritating high and bare notes’ music at 7pm. If music is allowed, it’s allowed.
Talk quietly or not at all when crossing the field to the toilets late at night, past people’s tents, and don’t shine your torch at tents and light them up.
Relax, chill out, have fun!
(I would never camp anywhere where there was any danger of the next pitch being close enough for guy ropes to cross).