I live in Amsterdam, we have Electric Charge parking spots all over the city, but I believe you have to subscribe to something to use them and they probably only make up 1 in 20 spaces (which are already in very high demand in this city) so you probably also need a parking permit for the area as well.

I could see you getting free charge or subsidised in order to ramp up interest.

Could be a good incentive if you got free parking, or prime locations because you had an EV.

It's not that easy in the US, the residential areas are much less dense and parking lots are huge.

Less dense increased the chances of off street parking doesn't it?

Also I don't see how the size of a parking lot changes things, if anything it means you could incentivise by having the EV slots closer to the attraction, plus have solar roofs to harness some cheap power.