Thank you for you very informative reply Dr Boonsireiset,
I do not think I will be able to travel with a piano so you suggestion of practicing using teeth as a keyboard is ingenious. No wonder you are a Dr.
As I am worried about cultural sensibilities as maybe the English version 'chopsticks' could be seen as racist should I attempt to learn the Russian version known as "tati-tati" or the "Cutlet Polka" although that version alternates the notes between the hands rather than playing them at the same time in harmony?