I'm in the USA, near Atlanta.
It would be an experiment for sure... I'd soon learn where it works and where it doesn't.
Simply read the current capacity right at the J-1772 station. It's usually listed on the side or back or somewhere. Usually in current (amps), but sometimes in watts or both.
Then you can know in advance if it is worth it for you to have more than 6.5 or so KW of chargers. Also check if there are 14-50Rs that you can use. For an example, the two 14-50Rs on the side of the CourthHouse in Genoa, NV is open to the public and I have charged there a lot. It's shown on Plugshare as well.
Don't forget every time you have to double your chargers to get near twice the charging speed. It is a lot easier to go from 1 KW to 2 KW charging than it is to go from 6 to 12 KW charging yet you will get a larger percentage of gain with going from the 1 to the two (a lot less heat loss). You could be better off with less than 7KW. But first check the specs on your AC charge stations in the area. They are also usually listed on Plugshare.
-Don- Reno, NV