It can vary on the type of battery you have and how much it needs to be charged. In most cases, 8 hours is the max. But for some it’s less. And yes, there is a charge at Disney. Online it says 2 chargers at each park, but I’m not sure how current that information is. I thought I saw more. However, it’s really not enough. My friends got suckered into renting an EV because the rental company offered a really low rate. They had no clue and let’s just say it didn’t go well.
There is another recent thread on this topic. Even some of those who own an EV say they have no plans to rent one when on vacation due to the various issues associated with charging. Clearly it takes FAR longer to recharge the battery compared to filling the gas tank on regular vehicles. Even if you find a working/available charging station, there are currently no national standards for charging. Every station may not be compatible with the connector your particular vehicle has. Trying to figure all that out while on vacations is part of why EV's aren't popular rental vehicles.
"Charge rage" is becoming a thing. People arriving and wanting to charge and angry that others are at a station and not monitoring their charge and moving when done.
We have a serious lack of charging stations and small number of spots at stations. That includes Interstates in my area. people want to plug in a a destination and go shop, or see a movie, or whatever. Not sit and monitor their charge until it reaches 100%. It's problematic!