Arrive early to find a parking spot, book your lunch or dinner at one of the beautiful restaurants there. Our favourite is Cafe Fleurs right in the centre of town on the island, overlooking the river Sorgue and serving a wonderfull fare at reasonable prices. Try the balcony for lunch (menu plaisir for 37 euros) or the main room for dinner.
The Fair hosts over 350 merchants, keen to show (and sell...) their wares.
If you miss the Fair in August, there is another one, although smaller in scale on the Easter week-end.
Find more about L'isle sur la Sorgue and La Fontaine de Vaucluse in our Travel?provence section here