The offer requires that you
contact the Member Service Centre at firstname.lastname@example.org or call +44 207 949 0379 and mention the promotional code indicated in your XING promotion (Code: OPBCSL09).
Now, Silver status doesn’t get you a ton.
But it does get you “Our World, Your Lounge” benefits in Europe, Middle East, and Africa: elite members are welcome any time in any hotel for a free coffee, tea or hot chocolate for two people and to use free wireless internet.
This is really a nice benefit that doesn’t cost the hotels much at all but really creates a feeling of belonging and a special relationship with the hotel chain for its elite membership.