Is a EVSE box on the charging cable necessary?

I am new on this forum and about to take delivery of a new Prius Prime in the next week or so.
The Prius Prime PHEV is about to be released here in New Zealand for the first time and I am told a consignment is presently on the water on its way here - and one is mine!
In New Zealand here our domestic electrical system is 240 volts and the car comes with a cable with an EVSE box and with a domestic three pin plug. I am considering a second cable to carry in the car and I note that a number of public 'destination' chargers only take the type 2 16A 62196-2 plugs. The car socket is also a type 2, different from what I understand is used in the USA.
I can source a type 2 cable with M & F plugs without the EVSE box because the cable with the 'box' will cost an arm and a leg at my Toyota dealer. I understand the 'box' gives some charging options which I believe will be unnecessary for my second connection.
My question is, can I charge my car using a plain cable (without the EVSE box)?

 

I understand the outlets are all single phase that are using the Type 2 sockets/plugs here in NZ. One national retailer is rolling out chargers without cables and they have a Type 2 socket, hence my question about simply plugging a cable without an EVSE box on it

 

Thanks for your welcome Bisco. I have been grateful for your input to my EV knowledge (sofar)on this forum. As mentioned in my opening post, New Zealand Toyota is only just starting to introduce their plugin hybrid Prius and I feel that dealer support and knowledge will be lagging for some time yet.