I went to Paris last year and it was not a big deal, as long as you know the basics like excuse me/please/thank you.

A few times someone would correct us (eg "after 6pm we say bonsoir instead of bonjour"), but it never felt like it was done in a dickish way and people were generally pretty accommodating. Perhaps it helps that I went to Paris with low expectations, not thinking it'd live up to the hype, but I had a great time. Definitely don't let the language thing keep you from going!