You should not be afraid of french people talking in french. It would be like seing shout in Japanese, except its in french. But unlike japanese people, most of us can practice english in parties or whenever its needed, without auto-translatation. You might not get a fluent conversation but just what you need to be understood. Worst case scenario, google translation is your bestfriend !

And actually, thinking server #10 as a european server only is a huge mistake, its just a place recommanded for european players because we're so few in here. Everyone's more than welcome, servers are internationnals after all, theres no langage/timezone limitation.