I once worked as a front desk agent for a luxury hotel, and I remember this well. I usually tried to vary my little welcome speech to make it more personable and not so corporate, but whenever I mentioned loyalty, I thanked the guest, but went straight on through. It would have been weird to just say thank you and wait for a response.

"Mr. Smith, welcome back to the Aldorf Wastoria ( ), I want to thank you for being a Platinum member and as a sign of our appreciation, we have a few special amenities for you to enjoy during your stay with us..."