Plan C it was in the end. We're mightily glad we got an MY LR instead of an RWD, and this specific leg of our trip was one of the reasons we went with the LR.
Charged last night to 80% at the Crowne Plaza in Belgrade. They charge 200 Din (€1.50) for an hour of parking. But as well as slow A/C chargers, they have a 75kW DC charger. We took on board 50kWh in 50 minutes and when I went in to pay, the receptionist said it was ok, need to pay and raised the barrier for us.
I forgot the advice on Plughsare and followed the Tesla nav to the Aleksinac SuC. That brings you needlessly off the mainline 5km early. There's a motorway exit specifically for the Hotel Bosphorus. The 125 kW Tesla chargers can be accessed just as easily from the motorway side. On no account use the Istanbul restaurant toilets, use the Bosphorus hotel ones instead. We topped to 80% and headed another 50km down the road where we charged to 99% at LEDI in Brestovac. Kept it at 120 kph to Presevo peage. The peage was busy and although we were in the leftmost lane, there wasn't a lot of space to park, go ask the peage guy to open the barrier and let us across. So we joined the queue and asked when we got to the booth if we could loop around after we paid. He said no, it had to be done before we got to the booth. So be warned, if you're relying on Presevo on a southbound journey, park on the left by the plastic barrier and walk to the booth to ask. We were already running within range anyway so we pushed on and stuck to the speed limits from there on.
In Gevgelija, we already knew from Plughsare that the MakPetrol fast charger wasn't working, but we spent 15 minutes in Casino Flamingo Hotel trying to get the eLink charger working out of curiosity. The QR code is out of date and there is no longer an app.
Got to DEI Blue in Ikea with 14% remaining. Both borders had only taken 30 minutes each and temps today were 28-30C so conditions were good. The MY LR did 389km on 85% of battery at a mixture of 90 - 130 speeds. There were 2 moments of panic trying to start the DEI Blue charge for the first time with the App. Turned out that I had never confirmed my email when registering in the App a few weeks ago and my bank had blocked my credit card a few hours earlier thinking a charge at a Macedonian peage was fraudulent.
Chose to go with the 50kW DEI Bue chargers because we found them first and we only needed 25% to get to our ferry. By the time the meatballs were finished, we'd gotten leisurely to 44%, made the last ferry with 20 minutes to spare and got to our destination with 20% in the tank. So I don't have to trouble our host immediately for the granny charging he'd offered.