This supermarkt is just around the corner a 5 minute walk away. It's on most day open from 8.00 till 22.00 except for sundays (it opens around 12.00 and closes at 20.00). Here you can buy all the groceries you need.
If the sign says "HIER ALLEEN PINNEN", usually these will be the faster lanes, you can only pay with Dutch bank cards. Cash, Visa, and other foreign cards can be used in the regular lanes.