Thinking about taking the Wrangler out to the desert next weekend but the AC is being moody

So I've got a 2016 Jeep Wrangler Unlimited and I'm supposed to be joining some friends for an overnight camp out near Al Faya next Friday. The thing is the AC has been kind of inconsistent lately and I don't want to be that guy sweating through his shirt while everyone else is comfortable on the drive out. When I'm just running around town it's okay, not ice cold but tolerable, but the moment I get on the highway or the engine is under any real load it starts blowing this weird lukewarm air that feels like it's just recirculating my own disappointment. I'm pretty sure the system is low on charge or maybe the condenser is clogged up with half the desert sand from the last three years of weekend trips. I don't want to go to some random shop where they'll just hook up a machine and overcharge it without checking for leaks properly. Been looking around for a Sharjah Jeep AC Reliable Repair Workshop that understands these things are basically rolling greenhouses with the hardtop on and won't just treat it like a sedan. Anyone have a go to spot that knows their way around a JK AC system before I end up bailing on this camping trip?