Stuh- The huge majority of people I've run into in Europe are at least bilingual ( and sometimes trilingual-puts the average American to shame) to the point that there's a lot of communication that happens in English no matter what country you're in. I was in one place and it was me, a person from Germany, and a person from Spain and the language we could all participate in a conversation in was English.
In the Netherlands, (it just hit me, Amsterdam would be fun for the summer too

) I don't think I met anyone who didn't speak fluent English as well as Dutch and German.
But, I spent a good amount of time in Tarifa, and though it is rural and kind of out of the way, I got by on my pathetic rudimentary fragmented little pieces of Spanish and I almost never felt that I wasn't understood, as almost everyone I spoke to could communicate in English as well.
In my experience, France is a country in which, though I think a lot of the people know at least the rudiments of English, they want you to at least
try to speak French. They kind of look at you blankly until you at least look like you're searching for the appropriate word-but as soon as you show you are trying-they'll help you.
The good thing for you is, if you're immersed in a language for a few months, if you have a good ear, you'll probably start picking it up. That's a bonus in my book.