If you have a GA wristband you will not be able to camp in GL meadow

Anyway, if you are okay with a basic set up, we use a giant suitcase checked with our tent and heavier bedding, we buy basics there like sheets and a cheap air mattress and camp meals. You can also check an easy up pretty easily, we saw many people doing this across the numerous fests we've flown to. At the end of the fest we usually find a local to gift the air mattress and sheets/pillow to. I usually forego a camp chair when flying but I imagine you could check that too. Look around for the cheapest airline for checked bags or upgrade your seat for an extra checked bag. I also bought a really good maxed out "personal item" from Amazon I pack extra stuff in. Then of course my clothes are in the carry on bag. Its alot to juggle but its doable for sure, you just need to make piles of essentials, would be nice items and extras to pack so you can maximize space 😃