I posted the item with a J1772 connector for if someone was using this at home or a regular destination then the extra adapter would not be needed on a daily basis.
Also the link has adapters available to about anything. So if your second home has just a dryer outlet (10-30, 14-30) or maybe a welder outlet (6-30, 6-50) you are good to go.
In the early days (2011) I was regularly plugging in at Mom's house through the 6-20 outlet for the garage mounted central vacuum.
If there is a plug, then there is an adapter.