First, welcome to the forum. As far as Burning Man the biggest concern I'd have is dust as well. The way our A-frame sealed, or didn't fully seal
, along the sides of the "A" would have allowed for a lot of dust to enter the unit in that environment. The side panels fit great up under the roof panels to keep water out.
But in a windy, dusty environment any
loose side seals could allow a lot of dust to blow in under
the roof panels along the top of the "A" sides.
Two things may help, a spreader bar, like used for securing a load in a pick up, to help seal the unit. Harbor Freight has a nice one, it even comes with large square pads to help spread the load out a bit more. The spreader goes in the top of the "A" to apply more pressure on the side seals. The bar also makes a nice place to hang "stuff" off.
Just be very
careful not to apply too much pressure or you can damage the walls!
The warranty won't cover that one... There are threads in this forum about how to use a spreader bar for a better seal, use the Forum Search feature to find them.
Second, sealing the outside of the unit along the "A", where the roof overlaps the wall, with some wide tape should help as well. The less dust that makes it to the seals the better IMHO... I'd also cover the front and rear hinge areas. Be very careful what type tape you use so it doesn't ruin the finish or leave a sticky residue. I can't recommend any particular tape as I never had the need for it... I'd try checking with a good body shop.
Both of these "tips" are what I
would have tried when we had our A-frame...your results may vary...
Enjoy your new "A" frame!