I think I would rather do it the 'soft way'...
It's a very long trip, allowing for plenty of this, plus you're certain to run into other English (or German) speakers - depending on the time of year of course.
In studying Russian it always interested me to note the use of "I think..." to begin a sentence. Sometimes it is said slowly to cover for "Wait a minute! I'm trying to think of an answer that won't get me in trouble!"Я думаю, что я один из немногих трехязычных людей здесь. Немецкий, русский и английский.
On a really good day I can speak English without making too many mistakes... as for the other stuff, I have no clue!