I've brought a fiddle out there a few years running. Granted, it's my free fiddle - there's no way in hell my baby, my precious, my sweet hand-made Fairfax viola will journey out there.
The first year I snapped two bridges, probably due to massive temp fluxuations fucking with the string tension. Something slips, the bridge slams into the face, and kee-rack! Bring superglue and extra bridges.
That same year I got some funky grease spots (wha?) on the bow. Now, I'm pretty careful, but I can only imagine with all the lotioning and sunscreening that happens something got on it. Bring anything you need to alter your bow hair, as it's going through dry/wet trauma. Rosin, lava soap, what have you. Bring it. I think you can do an alcohol cleanse for the grease situation, but you'll want to look it up before hand.
The next year the bow broke. Granted, I buy cheap ass bows to bring out there because my good one, once again, is worth more than that week to me. But I opened my case and it had snapped near the tip. No playing at all for me that year. Buy an extra.
IME, the dust will require a major clean out of the instrument and the case. You'll probably never get it all out of the interior unless you have some specialised f-hole vac. (Yeah fishie, put it in things that sound dirty but aren't.) You should expect that going in. Nothing on an instrument like that - that has so many porous surfaces - will be the same.
That's ok if you're ready for it. Bringing my crap fiddle has been really rewarding, even last year when I didn't bring it out so much (but nothing broke!) That chunk of wood has brought about some pretty amazing interactions.
You'll want to think carefully about what you do with it. The main thing is to keep it in shade when you aren't using it, and keep it humidified. You have a dampit, right? If not, get one. Or make something similar. Aridity is a major danger out there. Mine hasn't cracked... so far. But that doesn't mean it won't, and a crack is difficult to fix without losing sound quality. And expensive, to boot.
Those things sound obvious, but I think they're why I've escaped without major damage to the fiddle. Shade is good. Shade is very good. Otherwise, think about how it will cook in that case? Yeah.
I'm a violist and don't actually want anyone to hear me, so I like to wander out on the playa. People find me. Folks have invited me for jams, too, as I've walked around. I'm sure if you actively seek them you'll find 'em for sure.
I hope you find an acceptable risk level for bringing your instrument. Now there will be two of us and we can conquer the world!
Hope that helps. If I missed anything, someone PM me.