1: The way Tesla does it, if you don’t have a credit card on file, they’ll block you from charging at your next supercharging visit until you do.
2: EA’s cents per minute Idle Fee is just silly. Set any grace period you want, but for God’s sake, charge at least $1.00 PER minute. Make it hurt. Make it really hurt!
For as much as I lbash Tesla and Elon Musk, I have to grant that there are many things in the Tesla ecosystem that Tesla does very, very well. Sensible, seamless, generally glitch-free, and generally very user-friendly.
I see lots of problems with the way Tesla does it. I've never been hit with an idle fee, but I had unnecessary angst because of the possibility.
Tesla goes by whether the station is 50% or more occupied but gives no way for a person to know. You could plug in when there are three other cars at a 12 charger station, two more could come along when you are eating, one could leave right before you get back and you'd see a practically empty station, yet Tesla would say that you are eligible for charges even though you weren't stopping anybody from charging and you saw a low use station all along.
Since the time the policy went into effect, stations have gotten bigger. If there are 100 chargers and 45 are free, chances of them filling up if it's not a holiday weekend are almost non existent. Yet the same 50% rule applies.
Remaining time estimates aren't accurate. If Tesla tells me that my charging will be done in 45 minutes, I decide that it gives me enough time to get lunch, I walk to one of the amenities that Tesla listed for that area, it turns out to be a 10 minute walk, and when I get there the app shows that I have 20 minutes left, I would have 10 minutes to eat, with the amount subject to change. If the station looked relatively empty, I might be rushing to return to the car for no reason. If Tesla said that you had a grace period of 10 minutes, as calculated based on your arrival time (i.e. if it said that charging will take 42 minutes, they charge idle fees after 52 minutes or 10 minutes after charging actually ends, whichever is later) then I'd consider it reasonable. But given the A|B configuration of some stations, meaning that your charging might speed up if another car leaves, it could make things a wild guess.
I want to be able to take trips without delay. For me, that means being able to charge while I'd be stopped anyway to eat. In almost a decade, I've never failed to make it back in time. But I've had to live with Tesla's app warning me that charging is almost done when it really had a half hour left, with Tesla dropping the level to 80% from 100% so that I have to manually use the app to push it back up to 100% or I'd not only get hit with idle fees, I wouldn't have enough charge, etc. And now they are implementing limits for high use stations where you can get hit with fees for charging above a certain percentage even if you need it.
I'm glad that I now have a Lucid and will probably be able to rely on charging at home and L2 charging at hotels with rare exceptions, since I should have enough range that I'm not likely to use it up in a single day. And for now, it's a moot point if EA says that they won't hit me with idle fees, not that I plan to overstay, but I can plan based on how much time it estimates and not have to worry about a server taking too long to give me the check.