By now you should know the drill: Most will have an extra day off. Regular shops will be closed, but gas stations, restaurants and so on should be open. Expect more people travelling around and on the long weekend. Cars, trains and of course if the weather is fine people will be outside doing fun stuff (or at least something they consider fun).
I hate that tradition.
But what can I say, I only have a small fridge which doesn’t fit much.