I think you are looking at the wrong solution here. What this really needs is a chat with the hotel management to come up with a solution to avoid Tesla drivers having to register or at least a simple way of getting their charges revoked. Maybe that could be as simple as instructing their parking contractor to refrain from sending parking notices to any car showing up as a Tesla on their database. Perhaps that instruction could even be linked to those specific charging bays?
Having the site re-classified simply because you got a parking charge by not reading the signs doesn't necessarily solve the issue and creates confusion for those people looking for a Supercharger on one of our major motorway networks. It doesn't bother me personally because I know they are there, but what about other non-locals who may end up driving straight past this site while looking for a Supercharger? You would probably end up creating queues at the next Supercharger along the road. Then there's an even worse scenario, where the hotel says f*** all this hassle and gets the chargers removed from their site altogether. Then they create 6 more parking spaces and don't have any more hassle from Tesla owners complaining about the simple registration!
I completely agree - but the "chat" approach hasn't produced a result. Meanwhile ParkingEye are deliberately targeting Tesla drivers who either don't see or don't understand the warning signs, and Tesla have simply put a mention of fines at the bottom of the info page on the map - you need to scroll down to see it.
As I see it we have two options:
1. We use this forum put pressure on Tesla, who in turn lean on the Campanile, who in turn demand that ParkingEye simply stop issuing penalties to Teslas that stay less than an hour. (btw - the registration process is redundant, the ANPR system does everyting automatically)
OR
2. We leave things as they are because as half the people in this thread have confirmed - registration isn't really a big burden, (and by inference it is ok for a few newbie Tesla drivers , tourists and foreigners to be fined).
When the Model 3 wave arrives, and quite a few of them end up being fined too, they might come to read this page, and realise that this problem existed long before they came along, but the Model S and X drivers thought it didn't matter enough to make a stand.