Air Seconds 8.4 Fresh & Black

The decathlon tents are unbeatable for car camping. They’re extremely good quality, the service from decathlon if you have any issues is usually S Tier. The fresh & black in the summer is also a no brainer. A friend of mine has a berghaus blackout tent and we compared over the summer in the heatwave and my decathlon tent was significantly colder.

The problem I have with tents like the Berghaus and the 8.4 is that there's no outside porch. In the 6.3 you have a 'messy' porch where you can take off muddy boots and wet clothes, store them on the grass and then step into a 'clean' inside space with a dry floor. We have a similar tent to the 6.3 and when it's raining wet clothes and muddy boots have to come inside. No matter how careful we are, the mud ends up all over the place.

Quechua Air Seconds! It has good head height and are easy to set up. I’ve camped with a Quechua for almost a year now and the blackout bedrooms are amazing for sun protection and sleeping in.

This is your answer OP. I’ve owned 5 different Quechua tents as I take groups out camping for fun. The 2 second tent is fine for light car camping but would be disastrously cumbersome for any kind of backpacking.

I'm not sure if you've got a Decathlon in your country, but they can help you with this purchase. They even have their "fresh and black" tents which stay cooler when the sun hits the tent (worth gold at a festival, basically everybody has these at festivals in my country). Apart from that, I'd get a cheap simple tent for a techno festival. Look into getting a 3-person tent to have some room to store clothes inside it if you are with 2 people and get a tarp for some dry-ish cooking space outside ("3-person" means: 3 sleeping mats will barely fit next to each other in the tent with no room to spare). Tarps can be a bit more difficult to set up properly, but easier to carry than a party tent (which would be your other option. The most lightweight option is to just find some people that brought the party tent and make friends with them. Just take some stuff you can trade for a space under the tent. Actually, thinking about it, just buy food at the place instead of cooking yourself. The festivals I went to hardly required cooking. But I guess that depends on the festival maybe. OK what festival are you going to? Maybe I can watch some footage and tell you what tents people were using there.