I did a 21 day water fast and broke it with normal food. If you kept good electrolytes through your fast you should have zero issues with refeeding. Eat slowly and mindfully and see how it goes. You will be fine.
Grapes are high in sugar and carbs.. like it has 17g of carbs of which 16g is sugar per 100g.. and I would assume that you are aware that you shouldn’t break your fast with sugar, especially that long one..
Few might be ok, but if that were me taking that of a long fast and my plan for refeeding would have changed, I would have just waited longer, rather than feeding myself straight up sugar