I assume they are done with Leg 3, and with 21 days only, I'm thinking that they'll be starting Leg 4 by today or tomorrow.
My predictions on the next location: Iceland, Greece, Italy, Ireland
I would include Spain, but since they just visited Spanish and Portuguese countries, I'm doubting they'll visit Spain and Portugal.
Another possibility is South Africa.
Long time no visit as far as I remember.
On other news, I have not seen any boot order so far.
I only know that TMZ arrived last in Rio, and 2 teams were recently seen in Argentina.