Some producers make red, white, and rose wines, or may make different vineyard versions of certain types of wine. You don't want to have mistaken which one the guest wants. Incorrect vintage years can make a big difference to very knowledgeable wine drinkers.
Yes. All of these characteristics can be important to the choice of wine by the guest and you don't want to find out after opening a bottle that the guest thought he or she was getting a different wine.
You want to avoid finding out too late that you opened the wrong wine, i.e., not the one ordered by the guest.