How to gently tell the guests that the store is about to close?

Tell the guest gently that the store will provide samples soon. Do you want to tell the guests that this store is about to try it? Telling the guest that the store is closing should be a euphemism, not a euphemism. Can you tell this guest when the shop opens? When to close the store, that is to say, he can come back next time and come early next time. Unfortunately, there is really no chance this time. Then, I apologize to the guests, and I believe the guests should understand you.