According to the law, the supplier must include an adapter. In practice, sometimes it has one, sometimes not. But I got one free of charge after "complaining".
bravo good question. i bought a schuko adapter which turns out to be a type 13 but on the label it says max 10Ax 5 hours. in my case, since the intention is to use the tapo for running an electric heater, i think i'll replace the socket directly with a shuko. in your case it depends on the load it has to handle. what is the continuous power it has to handle