We also are not put off by EHU metering, again because we are similarly low users of EHUs or that's electrical energy, whilst camping, using our solar system predominately.
Basically we rarely these days venture out mid November through till March, so space heating requirements, way our biggest energy ask, is inevitably modest.
The era of "low cost" electrical energy IMO is over and I can't see a business model of supplying unmetered electrical energy enduring for very much longer.
The difficulty as I see it in living with metering is removing the hassle element of reading the quantity a user takes.
Whilst believing provision cost would be massive here to have it, we need something like "pay at pump" petrol pumps have, read your credit card to get access to energy, charge to it for what you take.
An alternative adopted on a site we use with EHUs, is bollards with both 6 & 16 Amp outlets. The 6 Amps being unmetered, its "included", but the 16 Amps is effectively metered. Both have user resettable circuit breakers.
Availability of the 16 Amps is in buying a preloaded amount of energy the site owner then puts on that meter, either at the start or when you request a top up. There is no refund offered and the remaining units is on visual display all the time.
Done this way there is near zero hassle for clients or the owner, no chasing around for a refund on a few units before leaving. It just requires a bit of prejudgement or wait till the morning for a top up if you run out, though that's no hassle as simply plug back into the 6 Amps till your metered supply is recharged when the farmer has time to get back out to you.
Techically in the bollard it was easily done with the 6 Amp feed pulled off before the meter.
IMO it serves to curtail the profligate from spoiling things for others by placing the cost where really due, stinging the site owner, and far from least ecologically reducing demands on resources.