Again, I will admit I'm not an EV driver. But how would you know if someone wanted to use the charger, but you left it plugged in for hours just so you can enjoy your time?
You wouldn’t.
You can assume that overnight no one is going to get up every 15 minutes to see if a charger has come available overnight. If you get lucky and get one of the 2 or so hotel chargers, it should be yours for the entire night.
During the day you should move when your car reaches your target percentage, and is the reason I would not use theme park L2.
But that is just my opinion on how public L2 charging etiquette should work. Others think differently.
Public L2 charging is an amenity companies use to attract customers. It’s really not all that useful for the average EV driver on a road trip. It makes sense at work locations and at places accessible by locals who do not have L1 or L2 at home. It can make sense at places where someone will be spending hours, like a theme park, but only if there are enough L2 to meet demand, the subject of this thread.
I don’t even look at L2 charging options when planning road trips. Using L2 means planning 5-10 hour stops to gain a useful amount of electricity vs 20-30 minute DCFC stops.
I just DCFC when needed on a road trip. Though I might select a hotel over another if one has L2 and the other does not with the hope I get lucky and get one of the chargers overnight. If I don't get one of the chargers I just DCFC in the morning.
And that is where establishing an agreed upon charging etiquette is important.
For DCFC
1. Only charge past 80% if your route planning requires it.
2. Don’t use the spot as a parking spot
3. If you must charge past 80%, promptly move when done.
4. If you have a free charging plan that came with your car, don’t use loopholes to extend the charging session if people are waiting. For example with one manufacturer you get free 20 minute sessions. Don’t immediately start a second 20 minute session if people are waiting. Move your car and get back in line.
For L2
1. Move when no longer charging, unless charging overnight in which case it is expected that your car will block the charger overnight.
2. Don't use the spot as a parking spot
Some charging networks are experimenting with charging a fee to reserve a spot. I can see how that would be useful but I would only use it if the price was cheap and I doubt a cheap price will be profitable. A few of the networks just prevent the charger from activating for anyone else except the reservation holder but that does not stop someone from parking in the spot. Others have a device that physically blocks the spot and that device can only be opened by the reservation holder. In either case the charger becomes available again after the charge session finishes or after a grace period if the reservation holder never shows.
It's not quite the wild wild west as far as public EV charging is concerned but it is definitely still in the early stage.