If you're "checking" in again each day (with your account), you are not entitled to another Diamond amenity. However,, some properties will not realize that and offer you another amenity anyways. In these cases, if you choose points (more than 1 will never post); therefore, on the 2nd (and subsequent) nights/check-ins choose the F&B amenity. This also applies to when you have more than 1 room registered and paid for by yourself. Most properties will grant you Diamond status perks on the 2nd room - same thing applies to the Welcome Amenity comment.