I don't know where you live, but it always helps to quickly identify that you are from the States. The hardcore nationalists are much more open to speak English to an American compared to somebody from English Canada.
Except I live across the border in Ontario. Worse, I have a French last name, my father didn't learn English till he was in his 20s and none of my Aunts and Uncles know English. Even double worse I grew up in an English part of Quebec. Hand that rocks the cradle determines language so I only know English. Sadly as mentioned above I had enough problems with picking up that language, at least speaking it.
For the basics like staying at a motel or ordering lunch, you will have no problems. There are many unilingual French speaking people that go to Florida and they do OK.
Not worried about food, as I am a cheap bastard so I will be bringing most of my food with me, the rest I can pick up from stores. I can do stores without speaking.
It is hotels that are more a concern. I'd like to go from Ontario past Quebec City northwards to that big ass park and beyond to the Saguenay and back. I could do it in a day but my back would scream and it would be a bit miserable. I suppose I could make a reservation on line with a credit card and have the male paternal unit write down some basic phrases on a sheet of paper like [I have a reservation]. How would it work otherwise.
It would basically be a driving trip so other than hotels I would actually have to talk much. I like road tripping.
And no I have no SP plans. Fuck, why go past Montreal towards Quebec City for escorts. Like going past Toronto to get SPs in Hamilton. Bit like going to McDonalds and ordering a Salad.