International EV Adapters – EVSE Adapters
There's more here as well. You'll have to do research as to the plug types to see what is used/available in the country you're going to. They do have adapters you can plug into the UMC for the British and euro style plugs.
Something to note is the tesla to non-tesla type 2 adapter. Based on the comment on the evchargeking page and a vague remembrance on people having some trouble charging on Tesla destination chargers set to tesla only, you may need that adapter if you run into any type 2 HPWC, though based on where you're going you likely will not need that.
You may want to look into a type2 -> type 1 adapter, which you then can combine with your j1772 adapter, but that's a lot of adapters so the type 2 -> tesla us would be more ideal.