I got along with a very minimal vocabulary. Next time I go, I'll know more but the following, in semi-random order, was pretty much my entire French vocabulary:
oui = yes
non = no
bon jour = good day
bon soir = good evening
au revior = good bye
je m'appelle _____ = my name is ______
bonne chance = good luck
bonne route = good journey
parlez-vous anglais? = do you speak English?
Je ne comprends pas = I don't understand
Ca va = How are you? (This also means O.K.)
mon amis = my friend
perdu = lost
Je suis perdu = I am lost
Allez = Go
merde = shit
s'il vous plait = please
thanks (very much) = merci (beaucoup)
bon = good
petit = little
velo = bicycle
attention = look out
tres = very
la toilette = the bathroom
gauche = left
droite = right
tout droite = straight ahead
fleche = arrow
sortie = exit
Dimanche = Sunday
Lundi = Monday
Mardi = Tuesday
Mercredi = Wednesday
Jeudi = Thursday
Vendredi = Friday
Samedi = Saturday
Un = One
Deux = Two
Trois = Three
Quatre = Four
Cinq = Five
Six = Six
Sept = Seven
Huit = Eight
Neuf = Nine
Dix = Ten
une ampoule = a light bulb
piles = battery
vente = wind
Bretagne = Brittany
Normandie = Normandy
de l'eau = water
coca = coca cola
orangina = carbonated orange drink
jambon = ham
poulet = chicken
saucisse = sausage
pomme = apple
pommes de terre = potatoes
frites = fried potatoes
cafe au lait = coffee with milk
fromage = cheese
pain = bread
boulangerie = bakery
potage = soup
du lait = milk
omelette = omelette