Being a volunteer is an awesome experiance! Especially if you want to overcome your fears. My fear was about speaking Polish language.)) Although my Polish is on level A2 (maximum)), after 2-3 hundred meetings with guests I stopped worrying about my accent and even my words :D I know, I know. You think that apparently I wasn't able to explain anything to people, but I was able and I loved it!
And another bonus of volunteering, is the meeting many interesting and cheerful people!