Too bad your a whole country away, my r12 needs service too.
I've done the cross county drive a few times. And north south to California so many times... Probably 100s of times.... When I was younger any excuse to get me on the road and I was all in. Now a cross country drive sounds dreadful..... My 200 mile round trip drives for feed for the farm is about my limit anymore.
If you can't find anyone to service the R12 system it really isn't that hard to do a quick retro fit.
@RecklessWOT it isn't that hard to retrofit back to R12 either. I don't care how "bastardized" it is I'd do it. To many techs don't have a good understand of this stuff especially on older rigs. They don't want to take the time to make them right. half the techs these days still working in the profession probably don't even know how to perform a retrofit, cause they got into the business after most of that was done and over with.
For anyone wondering what is involved in a basic retrofit:
A retrofit in either direction is pretty much sucking the system out and pulling a vacuum, if going to R123A adding PEG oil and recharging. If going back to R12 you really should pull the compressor dump the oil add ester oil and recharge. Good idea to change orifice tube and accumulator especially if going back to R12, but I've seen guys get away without. And yes I have personally done retrofits in both directions and seen cars on the road years later still working just fine. While there is an efficiency difference, working pressures and charge amounts are slightly different. For the purposes of a retrofit It's just oil and refrigerant changes nothing more. If you retrofit and don't like it, it shouldn't be hard to go back.
Now to add more fuel to the fire this is the last year a new car can have R134A in it. The newest refrigerant is R1234-YF. Though no ban is set for R134A use in the repair and aftermarket world the EPA is considering it. I'd expect it in the next few years, so that would likely mean a whole new round of retrofitting and new stuff to learn, but we'd be retrofitting to something different such as R744 or R152A, because R1234YF is not compatible in anyway with an R134A or R12 system.
Summary it's really quite simple right now, but changes on the horizon are likely to make it much more complicated and even more expensive.